Logical ReasoningDifficulty: Medium

PT118 S3 Q23 Explanation

Some vegetarians have argued that

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

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Stimulus

Some vegetarians have argued that there are two individually sufficient reasons for not eating meat—one based on health considerations, and the other based on the aversion to living at the expense of other conscious creatures. But suppose that eating meat were essential to good health for humans. Then it would be less conscious creatures is enough of a reason to stop eating meat.

What this question is testing

Role

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
23.

Which one of the following most accurately describes the role played in the argument by the supposition that eating meat is

Answer choices

  1. Too Strong: Disprove7% picked this

    It is used to disprove the vegetarian position that we should

    The author is only saying, "In my hypothetical, it would be clear that the vegetarian position is correct". That's far softer than saying, "In my hypothetical, I have disproved their position."

  2. Opposite6% picked this

    It is used to show that the two types of reasons cited in favor of

    It's actually used to show that the two types of reasons would be inextricably interdependent. If eating meat were essential for health considerations, then one of the vegetarians' sufficient reasons for avoiding meat would actually become a reason to eat meat. Meanwhile, their other reason (don't live at the expense of other conscious creatures) would still be saying don't eat meat. Thus, the author is saying, the two reasons would be in conflict with each other. Health considerations would be telling us to eat meat. Anti-murder considerations would be telling us to not eat meat.

  3. Too Strong: Disprove3% picked this

    It is used to disprove the claim that a vegetarian diet

    Nothing in this argument approaches the severity of disproving the vegetarians. The author is only saying, "In my hypothetical, it would be less clear that one of their reasons is valid." You can't disprove the claim that a veggie diet is healthy by saying, "Suppose a non-vegetarian diet were essential to good health". That's like saying I can disprove that Biden won the 2020 election by saying, "Suppose Trump won the election."

  4. Correct80% picked this

    It is used to weaken the claim that the consciousness of animals is a sufficient reason

    Why this is right

    The "suppose" sentence is used to get us to the final sentence. Is the final sentence weakening the claim that consciousness of animals is sufficient reason for not eating meat? Sure! It literally says, "Then (in my hypothetical world), it would be less clear that consciousness of animals is enough of a reason (sufficient reason)." Making a claim seem less clearly true = weakening

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

  5. Too Strong: Show No Reason4% picked this

    It is used to show that there is no sufficient reason for

    The author doesn't think he's proving / showing that the vegetarians are definitely and completely wrong, and thereby proving that there is NO sufficient reason for not eating meat. The author is only considering the two potential sufficient reasons offered by some vegetarians, and she's only trying to say that in a hypothetical world, one of those sufficient reasons wouldn't seem as sufficient.

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