Logical ReasoningDifficulty: Hard

PT138 S4 Q18 Explanation

Bus driver: Had the garbage truck

A free, expert breakdown of this official LSAT Logical Reasoning question.

TopicsPrinciple-Strengthen

Keep going in LSAT Lab

  • Save & drill this skill build targeted practice sets from questions like this one

  • Video walkthroughs watch every question solved step by step

  • 81 official LSATs as questions, timed sections & full-length tests

Full official LSAT questions are available through LawHub. This page provides LSAT Lab's explanation, strategy, and review tools without republishing the full official question.

Stimulus

Bus driver: Had the garbage truck not been exceeding the speed limit, it would not have collided with the bus I was driving. I, on the other hand, was abiding by all traffic regulations—as the police report confirms. Therefore, although I might have been able to avoid bus company should not reprimand me for the accident.

What this question is testing

Principle-Strengthen

Your task

Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.

Common trap

Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.

Winning move

Predict what a right answer must do, then test each choice against the conclusion-evidence gap.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
18.

Which one of the following principles, if valid, most helps to justify the reasoning in the

Answer choices

  1. Weak Conclusion Match13% picked this

    If a vehicle whose driver is violating a traffic regulation collides with a vehicle whose driver is not, the driver of the first vehicle

    This one is very tempting, since the trigger of the rule fits the facts of our argument. However, the conclusion isn't about who is solely responsible for the accident, it's about whether the bus company should / shouldn't reprimand this driver. The bus company could be like, "Yes, obviously it was the garbage truck driver's fault, but we're still mad that you didn't avoid the accident, since now we have to deal with getting the bus repaired."

  2. Bad Premise Match13% picked this

    A bus company should not reprimand one of its drivers whose bus is involved in a collision if a police report confirms that the

    Now we have the right conclusion, but we can't trigger this rule. Police report should confirms Driver 2 ? not totally at fault reprimand Did a police report confirm Driver 2 was to blame? Not that we've heard of.

  3. Illegal Opposite3% picked this

    Whenever a bus driver causes a collision to occur by violating a traffic regulation, the bus company

    This is doing an Illegal Opposite move. We would have liked a rule that looked like: Driver didn't should break any ? not traffic rule reprimand And this is just negating each side and saying, "If the driver did break a rule, they should be reprimanded."

  4. Bad Premise Match3% picked this

    A company that employs bus drivers should reprimand those drivers only when they become involved in collisions that they reasonably could

    This rule looks like this: driver could not should have been expected ? not be to avoid accident reprimanded In the case of this bus driver, was it established that he couldn't have been expected to avoid the accident? No. Actually, almost the opposite of that was established.

  5. Correct69% picked this

    When a bus is involved in a collision, the bus driver should not be reprimanded by the bus company if the collision did not

    Why this is right

    bus collision didn't should not be in a + result from bus ? reprimanded collision driver breaking for the accident a rule Was it established that this collision didn't result from the driver breaking a rule? Yes, because we know this driver didn't break a rule. The other driver did break a rule. And the collision would not have happened if the other driver hadn't been speeding. The collision resulted from the garbage truck's breaking of the speed limit.

    Skill tested: Principle-Strengthen · how this choice captures the argument's function is the move to repeat next time.

Continue the review in LSAT Lab

Save this question, watch the video walkthrough, and drill similar questions in your LSAT Lab account.

LSAT Lab

Turn this review into a targeted study plan.

Save this question, drill more like it, watch the video walkthrough, and track your progress in your LSAT Lab account.

Start practicing free