Logical ReasoningDifficulty: Easy

PT110 S3 Q11 Explanation

The present goal of the field

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

TopicsNecessary Assumption

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Stimulus

The present goal of the field of medicine seems to be to extend life indefinitely. Increasingly, the ability to transplant such organs as hearts, lungs, livers, and kidneys will allow us to live longer. But we can never achieve brain transplants. There are, for a start, ten million nerves running from the live longer, those with degenerative brain disorders will form an ever-increasing proportion of the population.

What this question is testing

Necessary Assumption

Your task

Find the assumption the argument requires in order for its conclusion to hold.

Common trap

Answers that would help the argument but aren't strictly required (sufficient, not necessary).

Winning move

Negate each choice — the right one breaks the argument when negated.

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

The question
11.

The argument above is based on which one of the

Answer choices

  1. Trap3% picked this

    Degenerative brain disorders will increasingly strike younger and

  2. Trap2% picked this

    It is still quite rare for people to live long enough to need more than one transplant

  3. Correct86% picked this

    There are degenerative brain disorders that will not be curable without

    Why this is right

    Answer C is correct.

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

  4. Trap9% picked this

    Degenerative brain disorders account for a very small proportion of deaths in the

  5. Trap0% picked this

    More is being spent on research into degenerative brain disorders than on

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