Logical ReasoningDifficulty: Easy

PT139 S4 Q10 Explanation

In a test of fuel efficiency

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

TopicsParallel

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Stimulus

In a test of fuel efficiency, car X and car Y yielded the same average fuel mileage, even though car X was driven in a less fuel-efficient manner than car Y fuel efficient than car Y.

What this question is testing

Parallel

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
10.

Which one of the following arguments is most similar in its reasoning to

Answer choices

  1. Trap1% picked this

    In an experiment, subject X consistently gave lower pain ratings in response to pinpricks than subject Y did. Therefore, it is reasonable to conclude

  2. Correct92% picked this

    Our hamster gained the same amount of weight as our neighbors' hamster, even though our hamster ate more than theirs. So it must be

    Why this is right

    Answer B is correct.

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

  3. Trap2% picked this

    When on his bicycle, Roland makes better time coasting down a hill than pedaling on a horizontal path. So he would make even better

  4. Trap4% picked this

    When asked to judge the value of various pieces of antique furniture, I gave lower estimates on average than you did. So in those

  5. Trap1% picked this

    Jean demonstrates a high level of visual acuity when she wears prescription glasses. Thus, it must be that without those prescription glasses, she would

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