Logical ReasoningDifficulty: Easy

PT153 S2 Q5 Explanation

One theory concerning the importance of vitamin C

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

TopicsMost Supported

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Stimulus

One theory concerning the importance of vitamin C in the human diet holds that vitamin C plays a crucial role in the production and maintenance of the bodyʼs supply of collagen, an important protein occurring almost exclusively in connective tissue and bones. For this reason, useful in treating the symptoms of some common illnesses.

What this question is testing

Most Supported

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
5.

Which one of the following is most strongly supported by the

Answer choices

  1. Correct84% picked this

    Some doctors believe that there are illnesses that affect the state of connective

    Why this is right

    If some doctors think that Vitamin C can useful in treating symptoms of some illnesses because of the fact that Vitamin C plays a crucial role in producing and maintaining the body's supply of an important protein that occurs mainly in connective tissue and bones, then the doctors must think that the symptoms of some illnesses relate to the supply of an important protein occurring mainly in connective tissue and bones. The symptoms of an illness relate to what parts of the body are attacked by the illness (or to what parts of the immune system attack that illness). If giving a patient more of a protein that occurs within connective tissue and bones would help them with symptoms of illness X, it sounds like illness X affects connective tissue and bones, causing certain related symptoms.

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

  2. Too Strong: the only1% picked this

    Some doctors believe that vitamin C is the only substance that produces

    This would only be supportable if we were told that "For this reason, some doctors believe that vitamin C is essential in treating the symptoms of certain illnesses". If we needed vitamin C, then that would support that it's the only substance that help us with collagen. But saying that vitamin C "can be useful" is not strong enough to support that it's "the only" source of collagen assistance.

  3. Unsupported Causal Relationship5% picked this

    Some doctors believe that strengthening connective tissue and bones increases the body?s ability to

    The passage is suggesting that taking vitamin C would have an effect on our connective tissue and bones. This answer is saying that our connective tissue and bones would have an effect on our ability to take vitamin C.

  4. Too Strong: most effective5% picked this

    Some doctors believe that use of vitamin C is the most effective treatment for

    All we heard is "can be useful in treating the symptoms of some common illnesses". We have no support for the way more extreme claim that vitamin C is "the #1 most effective treatment for certain common illnesses".

  5. Too Strong: any illness6% picked this

    Some doctors believe that any illness that can be ameliorated with vitamin C causes deterioration of

    All we heard is "can be useful in treating the symptoms of some common illnesses". This is saying that "100% of illnesses that can be helped by vitamin C are related to deterioration of connective tissue and bones". Vitamin C might do a lot of cool things besides help us with collagen, so it's possible that there are lots of illnesses that have nothing to do with connective tissue and bones, but vitamin C still ameliorates them (makes them better) based on one of its other effects.

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