Logical Reasoning

PT16 · S3 · Q12 The retina scanner, a machine

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The retina scanner, a machine that scans the web of tiny blood vessels in the retina, stores information about the pattern formed by the blood vessels.

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.

12.

The reasoning in the argument depends upon assuming that

  1. Correct

    diseases of the human eye

    Why this is right

    Answer A is correct.

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

    81% picked this

  2. no person has a different

    Trap

    11% picked this

  3. there are enough retina scanners

    Trap

    3% picked this

  4. the number of blood vessels

    Trap

    2% picked this

  5. there is no person whose

    Trap

    3% picked this

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