Logical Reasoning

PT102 · S2 · Q6 One test to determine whether a

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One test to determine whether a person has been infected with tuberculosis consists of injecting the person with proteins extracted from the tuberculosis bacterium.

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.

6.

Which one of the following is an assumption on which the physicians' reasoning depends?

  1. All of the proteins present

    Trap

    4% picked this

  2. Localized skin irritations are a

    Trap

    11% picked this

  3. Correct

    The ability of the proteins

    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.

    77% picked this

  4. Some people who have been

    Trap

    2% picked this

  5. The body’s immune system cannot

    Trap

    6% picked this

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