Logical Reasoning

PT4 · S4 · Q23 The brains of identical twins

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The brains of identical twins are genetically identical.

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.

23.

Which one of the following is an assumption required by the argument?

  1. The brain of a person

    Trap

    9% picked this

  2. Correct

    The relative smallness of certain

    Why this is right

    Answer B is correct.

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

    75% picked this

  3. The brain of a person

    Trap

    6% picked this

  4. When a pair of identical

    Trap

    9% picked this

  5. People who have an identical

    Trap

    1% picked this

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