In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

Q: Which of the following would have best aided a vessel at sea in crossing the sea in the 18th century? (A) A radar system (B) An old soothsayer (C) An experienced navigator (D) A crow's nest

A: C
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Q: Offspring receive genes from their parents via what? (A) gene therapy (B) documents (C) double helix (D) paperwork

A: C
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Q: Which is a good source of nutrients for a mushroom? (A) a trotting horse (B) a roaring lion (C) a cut peony (D) a flying eagle

A:
C
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