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SAFRS Firefighter Aptitude study materials
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SAFRS Firefighter Aptitude practice questions

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Question 1Reading Comprehension

A department memo states: "All personnel must complete the annual fitness assessment by March 31. Members on approved medical leave are exempt but must complete it within 30 days of returning to duty." A firefighter returns from approved medical leave on April 10. By what date must the assessment be completed?

  1. March 31
  2. December 31
  3. May 10 Correct answer.
  4. April 10

Explanation

The memo exempts members on approved medical leave from the March 31 deadline but requires completion within 30 days of returning to duty. Returning April 10 plus 30 days yields May 10. The general deadline does not apply to exempted members.

Question 2Reading Comprehension

Read this sentence: "The captain, after reviewing the incident report and conferring with the battalion chief, authorized the crew to stand down." Who authorized the crew to stand down?

  1. The crew
  2. The battalion chief
  3. The incident reporter
  4. The captain Correct answer.

Explanation

The subject of the sentence is 'the captain'; the phrases set off by commas are interrupting modifiers describing what the captain did. The battalion chief is only someone the captain conferred with. The main verb 'authorized' belongs to the captain.

Question 3Reading Comprehension

A training bulletin reads: "SCBA cylinders shall be inspected before each shift and after any use in an immediately dangerous to life or health atmosphere." According to the bulletin, when must a cylinder be inspected?

  1. Only at the annual service
  2. Only after IDLH use
  3. Once per week
  4. Before each shift and after IDLH use Correct answer.

Explanation

The bulletin lists two triggers joined by 'and': before each shift, and after any use in an IDLH atmosphere. Both conditions must be honored, so the complete answer includes both.

Question 4Reading Comprehension

A passage states: "Unlike smoke detectors, which warn occupants, sprinkler systems actively suppress fire by discharging water onto the seat of the blaze." According to the passage, what distinguishes sprinkler systems from smoke detectors?

  1. They require no maintenance
  2. They are cheaper to install
  3. They warn occupants sooner
  4. They actively suppress fire Correct answer.

Explanation

The passage contrasts warning (smoke detectors) with active suppression by discharging water (sprinklers). The stated distinction is the suppression function, not cost or maintenance.

Question 5Reading Comprehension

An evacuation notice says: "Residents in Zones A and B should evacuate immediately. Residents in Zone C should prepare to evacuate but remain in place until notified." What should a Zone C resident do?

  1. Ignore the notice
  2. Prepare to evacuate and wait for notification Correct answer.
  3. Move to Zone A
  4. Evacuate immediately

Explanation

The notice gives Zone C a distinct instruction: prepare to evacuate but remain in place until notified. Zone A and B residents are the ones told to leave immediately.

Question 6Reading Comprehension

Read this sentence: "Because the hydrant was obstructed, the engine company could not connect its supply line." What is the stated cause of the connection problem?

  1. A blocked hydrant Correct answer.
  2. Heavy traffic
  3. A broken hose
  4. A missing wrench

Explanation

The word 'because' introduces the cause: the hydrant was obstructed, meaning blocked. The supply line could not be connected as a result. No other cause is mentioned.

Question 7Reading Comprehension

A sign in the apparatus bay reads: "No parking. Access for emergency vehicles only." Which action complies with the sign?

  1. Leaving an emergency vehicle in the marked area for access Correct answer.
  2. Blocking the area during a drill
  3. Storing equipment in the marked area
  4. Parking a personal car briefly

Explanation

The sign reserves the area for emergency vehicle access, so only emergency vehicles using it for access comply. Personal vehicles, blocking, and storage violate the restriction.

Question 8Reading Comprehension

A paragraph explains: "Fire needs three elements to burn: fuel, oxygen, and heat. Removing any one of these will extinguish the fire." According to the paragraph, what happens if oxygen is removed?

  1. The fire grows hotter
  2. The fire needs more fuel
  3. The fire spreads faster
  4. The fire is extinguished Correct answer.

Explanation

The paragraph states that removing any one of the three elements extinguishes the fire. Oxygen is one of those elements, so removing it ends combustion.

Question 9Reading Comprehension

A policy states: "Members shall report any injury sustained on duty to their company officer before the end of the shift. If the injury requires medical treatment beyond first aid, a written report must also be filed within 24 hours." A firefighter sprains an ankle on duty and receives only first aid. What is required?

  1. Only a written report within 24 hours
  2. Both a written report and a physician's note
  3. No reporting because first aid was sufficient
  4. Only verbal notification before end of shift Correct answer.

Explanation

The written report is triggered only when treatment goes beyond first aid. Because only first aid was given, the member still owes the baseline duty: reporting to the company officer before the end of the shift.

Question 10Reading Comprehension

Read this sentence: "The investigator determined that the fire originated in the kitchen, although the homeowner insisted it began in the garage." What does the sentence indicate about the two claims?

  1. They conflict about the origin Correct answer.
  2. They agree on the origin
  3. The investigator changed his finding
  4. The homeowner's claim is confirmed

Explanation

The word 'although' signals a contrast between the investigator's finding (kitchen) and the homeowner's claim (garage). The two statements therefore conflict about where the fire began.

Question 11Reading Comprehension

A bulletin states: "When two companies arrive at a scene simultaneously, the first-arriving officer assumes command until a higher-ranking officer arrives and formally assumes it." A lieutenant and a captain arrive at the same time, and no higher-ranking officer is present. Who assumes command?

  1. Command remains unassigned
  2. The dispatcher
  3. The first-arriving officer Correct answer.
  4. The captain, because of higher rank

Explanation

The bulletin assigns command to the first-arriving officer until a higher-ranking officer formally assumes it. Since no higher-ranking officer arrives to take command, the first-arriving officer retains it.

Question 12Reading Comprehension

A passage reads: "Contrary to popular belief, most residential fire deaths result from smoke inhalation rather than burns. Smoke contains carbon monoxide and other toxic gases that render occupants unconscious before flames reach them." What is the main point of the passage?

  1. Sprinklers prevent most fire deaths
  2. Burns are the leading cause of fire deaths
  3. Smoke inhalation causes most residential fire deaths Correct answer.
  4. Carbon monoxide is harmless in small amounts

Explanation

The passage's central claim is that smoke inhalation, not burns, accounts for most residential fire deaths. The carbon monoxide detail supports that main point rather than standing alone.

Question 13Reading Comprehension

A memo says: "Effective immediately, all station visits by the public must be scheduled at least 48 hours in advance and approved by the shift commander." A community group requests a visit 72 hours ahead. What must still happen for the visit to be approved?

  1. The group must reschedule to exactly 48 hours
  2. The shift commander must approve it Correct answer.
  3. Nothing; 72 hours is sufficient
  4. The visit must be moved off-site

Explanation

The memo imposes two requirements: at least 48 hours' notice and shift commander approval. The 72-hour request satisfies the notice requirement but not the approval requirement.

Question 14Reading Comprehension

Read this sentence: "The report, which was filed late, contained several inaccuracies." Which statement is supported by the sentence?

  1. The report was late and inaccurate Correct answer.
  2. The report was neither late nor inaccurate
  3. The report was on time but inaccurate
  4. The report was accurate but late

Explanation

The sentence asserts two things: the report was filed late (the relative clause) and it contained inaccuracies (the main clause). Both facts are stated, so the supported statement combines them.

Question 15Reading Comprehension

A procedure states: "Before entering a burning structure, crews must check that the hose line is charged, that the thermal imager is operational, and that a backup line is in place." Which item is part of the required pre-entry check?

  1. Aerial ladder placement
  2. Ventilation fan setup
  3. Water supply from a hydrant
  4. A charged hose line Correct answer.

Explanation

The procedure lists three specific checks, and a charged hose line is one of them. The other choices are plausible fireground tasks but are not among the stated pre-entry checks.

Question 16Reading Comprehension

A passage states: "Ventilation improves interior visibility and reduces heat, but performing it prematurely can draw fire toward openings and endanger crews." What does the passage say about premature ventilation?

  1. It can draw fire toward openings Correct answer.
  2. It has no effect on fire behavior
  3. It always improves visibility
  4. It eliminates the need for hose lines

Explanation

The passage balances benefits against a risk: premature ventilation can pull fire toward openings and endanger crews. That risk is the specific claim about doing it too early.

Question 17Reading Comprehension

A directive reads: "Personnel assigned to the rescue company shall maintain rope rescue certification. Certification must be renewed every two years, and lapsed certification requires completion of a refresher course before reassignment." A member's certification lapsed last month. What must occur before reassignment?

  1. A promotion review
  2. Completion of a refresher course Correct answer.
  3. A transfer to another company
  4. Nothing; certification renews automatically

Explanation

The directive states that lapsed certification requires a refresher course before reassignment. That condition applies to this member, so the refresher is the prerequisite.

Question 18Reading Comprehension

Read this sentence: "Only after the secondary search was complete did the chief allow the crews to leave the scene." What does the sentence imply about the timing of the crews' departure?

  1. They left during the search
  2. They left after the search Correct answer.
  3. They left before the search
  4. They never left

Explanation

The 'only after... did' construction places the search completion before the departure. The chief's permission came once the secondary search was finished, so the crews left afterward.

Question 19Reading Comprehension

A notice reads: "Water flow testing will occur on Tuesday between 9 a.m. and noon. Residents may notice temporary discoloration; run cold water until it clears before doing laundry." What should residents do if they see discolored water?

  1. Do laundry right away
  2. Avoid all water use for a week
  3. Call the fire department immediately
  4. Run cold water until it clears Correct answer.

Explanation

The notice gives a specific remedy for discoloration: run cold water until it clears, and avoid laundry until then. That instruction is the direct response to the described condition.

Question 20Reading Comprehension

A passage explains: "Standpipes provide a fixed water supply connection inside large buildings, allowing firefighters to attach hose lines on upper floors without stretching hose from the street. However, a standpipe is only as reliable as its maintenance record." What limitation does the passage identify?

  1. Standpipes are only for street use
  2. Standpipes replace hose lines entirely
  3. Standpipes cannot reach upper floors
  4. Standpipes depend on maintenance Correct answer.

Explanation

The passage notes a benefit (avoiding long hose stretches to upper floors) and a limitation: reliability depends on maintenance. That caveat is the identified drawback.

Question 21Reading Comprehension

Two reports describe the same fire. Report A says the fire began at 2:15 a.m. and was under control at 3:40 a.m. Report B says the fire began at 2:15 a.m. and was under control at 3:10 a.m. Which statement is accurate?

  1. The reports disagree on both times
  2. The reports agree on the start time Correct answer.
  3. The reports agree on both times
  4. The reports agree on the control time

Explanation

Comparing the reports shows both give 2:15 a.m. as the start time, but they differ on when the fire was controlled (3:40 versus 3:10). Only the start time matches.

Question 22Reading Comprehension

A regulation states: "No member shall operate an aerial apparatus unless he or she has completed the aerial operator course and holds a current certification. A member whose certification has expired may operate only under direct supervision of a certified operator." A member with an expired certification is asked to operate the aerial. What is permitted?

  1. Refusing all aerial work permanently
  2. Operating alone as usual
  3. Operating under direct supervision of a certified operator Correct answer.
  4. Operating after a verbal promise to renew

Explanation

The regulation creates a special allowance for expired certifications: operation is permitted only under direct supervision of a certified operator. Without that supervision, operation is not allowed.

Question 23Reading Comprehension

Read this sentence: "Had the alarm been tested, the faulty sensor would have been discovered before the drill." What does the sentence suggest about the sensor?

  1. It was replaced before the drill
  2. It was not tested and went undiscovered Correct answer.
  3. It was tested and worked
  4. It caused the drill to be canceled

Explanation

The past unreal conditional ('Had the alarm been tested... would have been discovered') describes a condition that did not occur. It implies the alarm was not tested, so the fault went unnoticed until later.

Question 24Reading Comprehension

A report states: "The cause was classified as undetermined, not because evidence was lacking, but because the available evidence supported multiple equally plausible ignition scenarios." Why was the cause classified as undetermined?

  1. No evidence was collected
  2. The building was destroyed
  3. Evidence supported multiple plausible scenarios Correct answer.
  4. The investigation was closed early

Explanation

The sentence explicitly denies lack of evidence and gives the real reason: the evidence supported several equally plausible scenarios. When multiple causes remain equally supported, the cause stays undetermined.

Question 25Reading Comprehension

A passage reads: "Critics argue that mandatory sprinkler ordinances raise construction costs and discourage development. Supporters counter that the same ordinances reduce property loss and firefighter injury over the life of a building. Both sides agree that initial costs rise." On what point do the two sides agree?

  1. Ordinances should be repealed
  2. Ordinances reduce firefighter injury
  3. Ordinances raise initial costs Correct answer.
  4. Ordinances discourage development

Explanation

The passage states explicitly that both sides agree initial costs rise. Reduced injuries and discouraged development are each attributed to only one side, and repeal is not discussed.

Question 26Reading Comprehension

A training handout states: "A PASS device is an emergency beacon worn by a firefighter. When activated, it sounds a loud alarm to help rescuers locate a downed or trapped member." According to the handout, what is the main purpose of a PASS device?

  1. To cool the wearer's protective clothing during firefighting
  2. To record the wearer's radio conversations for later review
  3. To measure the amount of air remaining in a cylinder
  4. To help rescuers find a firefighter who is down or trapped Correct answer.

Explanation

The handout defines the device by its function: it sounds a loud alarm so rescuers can locate a downed or trapped member. Any option describing measurement, cooling, or recording describes a different function than the one stated.

Question 27Reading Comprehension

A station order reads: "Company officers shall submit equipment deficiency reports by the close of business each Friday. Reports received after that time will be held until the following week's review." An officer completes a deficiency report on Saturday morning. Under this order, when will the report be reviewed?

  1. At the end of the current Friday
  2. On the same Saturday it was submitted
  3. Immediately, because equipment reports are urgent
  4. During the following week's review Correct answer.

Explanation

The order states that reports received after the Friday close of business are held until the following week's review. A Saturday submission falls after that cutoff, so it waits for the next review cycle.

Question 28Reading Comprehension

A manual explains: "A firefighter's turnout coat protects against heat and abrasion, but it is not a substitute for a self-contained breathing apparatus. Smoke can incapacitate a person in seconds even when the coat is fully fastened." Which conclusion is best supported by the passage?

  1. Abrasion resistance is the coat's only protective feature
  2. Breathing protection is needed even when the coat is fully fastened Correct answer.
  3. Turnout coats provide no meaningful protection of any kind
  4. A fastened coat makes smoke exposure harmless for a short time

Explanation

The passage contrasts the coat's heat and abrasion protection with the separate need for breathing apparatus, noting smoke can incapacitate quickly even with the coat fastened. This supports the conclusion that breathing protection is still required.

Question 29Reading Comprehension

A bulletin reads: "Hydrant inspections shall be completed quarterly. Inspectors shall record static pressure and note any visible damage. Hydrants found inoperable shall be tagged and reported to the water department within 24 hours." An inspector finds a hydrant that will not open. Which two actions does the bulletin require?

  1. Notifying the water department and scheduling a quarterly reinspection
  2. Recording static pressure and noting visible damage
  3. Tagging the hydrant and reporting it within 24 hours Correct answer.
  4. Replacing the hydrant and updating the inspection log

Explanation

The bulletin gives a specific rule for inoperable hydrants: tag them and report to the water department within 24 hours. Recording pressure and damage applies to routine inspections, not the inoperable case.

Question 30Reading Comprehension

A report states: "The department's response times improved after the new dispatch protocol was adopted; however, the report cautions that the same period saw unusually light traffic and mild weather, conditions that independently shorten travel times." Which statement best reflects the report's position?

  1. The protocol should be withdrawn because the data are unreliable
  2. Traffic and weather have no bearing on response times
  3. The improved response times prove the protocol was effective
  4. The improvement may owe partly to conditions unrelated to the protocol Correct answer.

Explanation

The report notes improvement but flags concurrent light traffic and mild weather as independent causes of shorter travel times. That caveat means the gain cannot be credited to the protocol alone.

Question 31Written Communication

Which sentence uses correct subject-verb agreement?

  1. The crew of firefighters arrive at the station at seven each morning.
  2. The crew of firefighters arrives at the station at seven each morning. Correct answer.
  3. The crew of firefighters arriving at the station at seven each morning.
  4. The crew of firefighters have arrived at the station at seven each morning.

Explanation

The subject is 'crew,' a collective noun treated as singular here, so the verb must be 'arrives.' The prepositional phrase 'of firefighters' does not change the number of the subject. Option 2 supplies a verb that agrees with the singular subject.

Question 32Written Communication

Which sentence is punctuated correctly?

  1. Before the inspection; the captain ordered all equipment cleaned.
  2. Before the inspection the captain ordered, all equipment cleaned.
  3. Before the inspection, the captain ordered all equipment cleaned. Correct answer.
  4. Before the inspection the captain, ordered all equipment cleaned.

Explanation

An introductory phrase is set off from the main clause with a comma. The main clause here is 'the captain ordered all equipment cleaned,' which needs no internal comma. A semicolon would be wrong because the first part is not an independent clause.

Question 33Written Communication

In a fire report, which sentence uses the most precise and objective language?

  1. The occupant was crying and shaking when crews entered. Correct answer.
  2. The occupant was clearly terrified when we arrived.
  3. The occupant appeared extremely upset about the situation.
  4. The occupant was a total wreck by the time we got there.

Explanation

Reports should record observable, factual details rather than conclusions about a person's emotions. 'Crying and shaking' describes what responders actually saw. Subjective labels such as 'terrified' or 'a total wreck' introduce opinion into the record.

Question 34Written Communication

Which word correctly completes the sentence: 'The battalion chief spoke to _____ about the schedule change.'

  1. him Correct answer.
  2. himself
  3. his
  4. he

Explanation

The pronoun follows the preposition 'to,' so it must be in the objective case. 'Him' is the objective form. 'He' is subjective, 'himself' is reflexive, and 'his' is possessive.

Question 35Written Communication

What is the primary purpose of the topic sentence in a paragraph of a written incident summary?

  1. To provide a citation for the paragraph's sources
  2. To list every detail that follows in the paragraph
  3. To introduce the main idea the paragraph will develop Correct answer.
  4. To close the paragraph with a concluding thought

Explanation

A topic sentence states the central point that the rest of the paragraph supports or explains. Supporting details follow it, and a closing sentence comes at the end. Citations and exhaustive detail lists are not the function of a topic sentence.

Question 36Written Communication

Which sentence correctly uses a semicolon?

  1. The alarm sounded; quickly.
  2. The alarm; sounded and the crew responded quickly.
  3. The alarm sounded; and the crew responded quickly.
  4. The alarm sounded; the crew responded quickly. Correct answer.

Explanation

A semicolon can join two closely related independent clauses without a conjunction. 'The alarm sounded' and 'the crew responded quickly' are both complete clauses. Using a semicolon before a coordinating conjunction or before a single adverb is incorrect.

Question 37Written Communication

A report states: 'Smoke was visible from the second-floor window, and occupants were yelling from the roof.' Which organizational pattern does this sentence follow?

  1. Chronological order
  2. Comparison and contrast
  3. Cause and effect
  4. Spatial description Correct answer.

Explanation

The sentence describes conditions by location: the second-floor window and the roof. Spatial organization arranges information according to physical position. Nothing here explains a cause, orders events in time, or compares two things.

Question 38Written Communication

Which revision best corrects the run-on sentence: 'The hydrant was frozen the crew used a tanker instead.'

  1. The hydrant was frozen the crew, used a tanker instead.
  2. The hydrant was frozen; the crew used a tanker instead. Correct answer.
  3. The hydrant was frozen and the crew, used a tanker instead.
  4. The hydrant was frozen, the crew used a tanker instead.

Explanation

Two independent clauses must be separated by a period, a semicolon, or a comma plus a coordinating conjunction. A semicolon correctly joins these closely related clauses. A comma alone creates a comma splice.

Question 39Written Communication

Which sentence maintains consistent verb tense?

  1. The crew entered the building and is searching each room.
  2. The crew entered the building and searched each room. Correct answer.
  3. The crew enters the building and searched each room.
  4. The crew entered the building and searches each room.

Explanation

Both verbs in a compound predicate should use the same tense unless a time shift is intended. 'Entered' and 'searched' are both simple past. The other options shift between past and present without a clear reason.

Question 40Written Communication

In the sentence 'After checking the gauge, the firefighter recorded the reading,' what does the introductory phrase modify?

  1. The gauge
  2. The recorded data
  3. The firefighter Correct answer.
  4. The reading

Explanation

An introductory participial phrase modifies the subject of the main clause that follows it. The subject of 'recorded' is 'the firefighter,' who did the checking. Placing the phrase elsewhere would create a dangling modifier.

Question 41Written Communication

Which word is used correctly in the sentence: 'The additional staffing will _____ the response time.'

  1. effected
  2. effect
  3. affects
  4. affect Correct answer.

Explanation

'Affect' is normally a verb meaning to influence, which fits after the modal 'will.' 'Effect' is usually a noun meaning result. The base form 'affect' is required after 'will.'

Question 42Written Communication

Which sentence uses the apostrophe correctly?

  1. The firefighters's radios were stored in the truck cab.
  2. The firefighters radios were stored in the trucks cab.
  3. The firefighter's radios were stored in the truck's cab. Correct answer.
  4. The firefighters' radios were stored in the trucks cab.

Explanation

A singular possessive takes an apostrophe before the s: 'firefighter's' and 'truck's.' Each possessive noun in the sentence must be marked. The other options either omit a needed apostrophe or misplace one.

Question 43Written Communication

A narrative report should present events in which order to be clearest for a reader?

  1. In the order the events occurred Correct answer.
  2. In alphabetical order by the people involved
  3. In reverse order, starting with the outcome
  4. In order of the reporter's personal opinion of importance

Explanation

Narrative reports are clearest when events are told in chronological order, matching how they unfolded. This lets a reader follow cause and sequence. Opinion, reverse order, and alphabetical ordering do not reflect the timeline.

Question 44Written Communication

Which sentence avoids a dangling modifier?

  1. Walking into the smoke, visibility dropped sharply.
  2. Walking into the smoke, the firefighter could barely see the doorway. Correct answer.
  3. Walking into the smoke, it was difficult for the doorway to be seen.
  4. Walking into the smoke, the doorway was hard to see.

Explanation

The introductory phrase 'walking into the smoke' must modify the subject of the main clause. Only option 2 makes the firefighter, the person doing the walking, the subject. The others attach the phrase to things that cannot walk.

Question 45Written Communication

Which sentence uses parallel structure in its list?

  1. The duties include inspecting equipment, to check hydrants, and record keeping.
  2. The duties include to inspect equipment, checking hydrants, and records.
  3. The duties include inspecting equipment, checking hydrants, and keeping records. Correct answer.
  4. The duties include inspecting equipment, checking hydrants, and to keep records.

Explanation

Items in a series should share the same grammatical form. All three items here are gerund phrases: inspecting, checking, and keeping. Mixing infinitives, gerunds, and nouns breaks parallelism.

Question 46Written Communication

Read this passage: 'The valve failed during the test. As a result, water pressure dropped below the required level.' What is the relationship between the two sentences?

  1. The two sentences describe unrelated events.
  2. The first sentence states an effect; the second states its cause.
  3. The second sentence contradicts the first.
  4. The first sentence states a cause; the second states its effect. Correct answer.

Explanation

The phrase 'as a result' signals that the second sentence follows from the first. The valve failure is the cause, and the pressure drop is the effect. Recognizing transition words is key to identifying logical relationships.

Question 47Written Communication

Which sentence best states a conclusion supported by evidence rather than opinion?

  1. The sprinkler system activated within ten seconds of the alarm. Correct answer.
  2. The sprinkler system is probably better than most systems.
  3. The sprinkler system seems like it might have worked okay.
  4. The sprinkler system is obviously the best on the market.

Explanation

A supported conclusion rests on a specific, verifiable observation. A measured activation time of ten seconds is factual and checkable. The other options offer unsupported praise, vague hedging, or comparison without evidence.

Question 48Written Communication

A firefighter must summarize a two-page inspection report for a shift briefing. Which approach best serves the audience?

  1. Quote the full report verbatim so nothing is omitted.
  2. Include every minor observation in the order it appears.
  3. Present the details alphabetically by the author's last name.
  4. Lead with the key findings and hazards, then add essential detail. Correct answer.

Explanation

A briefing summary should front-load the information the audience most needs, such as hazards and key findings, then supply supporting detail. Verbatim reading or exhaustive detail defeats the purpose of a summary.

Question 49Written Communication

Which sentence uses a colon correctly?

  1. The inspection revealed several problems: blocked exits, dead batteries, and a broken alarm. Correct answer.
  2. The inspection revealed: several blocked exits.
  3. The inspection revealed several problems, blocked exits: dead batteries and a broken alarm.
  4. The inspection: revealed several problems including blocked exits.

Explanation

A colon should follow a complete independent clause and introduce a list or explanation. In option 2, 'The inspection revealed several problems' is a full clause, and the colon introduces the list. A colon should not separate a verb from its object or split a subject from its verb.

Question 50Written Communication

Two sentences read: 'The crew extinguished the fire quickly. The structure sustained only minor damage.' Which revision best combines them to show the relationship between the ideas?

  1. Because the crew extinguished the fire quickly, the structure sustained only minor damage. Correct answer.
  2. The crew extinguished the fire quickly; the structure sustained only minor damage.
  3. The crew extinguished the fire quickly, but the structure sustained only minor damage.
  4. The crew extinguished the fire quickly, so the structure sustained only minor damage.

Explanation

The quick extinguishment explains why damage was minor, a cause-and-effect relationship best expressed with 'because.' 'But' signals contrast, and 'so' reverses the causal direction. A bare semicolon joins the clauses without clarifying how they relate.