Logical ReasoningDifficulty: Medium

PT15 S3 Q17 Explanation

X: Medical research on animals should not

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

TopicsMethod

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Stimulus

X: Medical research on animals should not be reduced in response to a concern for animals, because results of such research serve to avert human suffering. In such research a trade-off between human and animal should give greater weight to human welfare.

Y: With technology that is currently available, much of the research presently performed on animals could instead be done with computer without causing any suffering.

What this question is testing

Method

Your task

Describe how the argument proceeds — the technique it uses to reach its conclusion.

Common trap

Answers that describe a method the argument doesn't actually use.

Winning move

Track the role each statement plays, then match that to the choice describing the same moves.

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

The question
17.

The relationship of Y’s response to X’s argument is that

Answer choices

  1. Correct70% picked this

    contradicts a premise on which X’s

    Why this is right

    X said that there would be an inevitable trade-off between human and animal welfare with this sort of research, and Y's alternative method implicitly contradicts that premise. Inevitable = unavoidable, but Y is showing it's possible to do the research humans need without engendering animal suffering. There doesn't have to be a tradeoff. Animal suffering is avoidable.

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

  2. Bad Evidence Match (no disagreement)13% picked this

    disagrees with X about the weight to be given to animal suffering as opposed

    The respondent never directly disagrees with the relative weight of human versus animal welfare; she merely proposes avoiding animal suffering through an alternative.

  3. Bad Evidence Match (no logical consequence)1% picked this

    presents a logical consequence of the premises of

    There is no logical consequence presented that follows from accepting the original argument. The response instead suggests an alternative, not directly deriving an implication.

  4. Opposite (strengthening X)5% picked this

    strengthens X’s argument by presenting evidence not mentioned

    The response does not strengthen the original argument; it provides an alternative that challenges the necessity of the original method.

  5. Opposite (supporting X's arg)10% picked this

    supplies a premise to X’s argument that was not

    The response does not supply a premise meant to support the argument. Rather, it offers a conflicting idea suggesting a different approach.

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