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: speed is a measure of how fast all these move but (A) a person waiting (B) a fish swimming (C) a dog running (D) a bird flying

A: A
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Q: Which of the following has a population of zero? (A) Merriam's elk (B) bison (C) llama (D) whooping crane

A: A
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Q: What contributes to prey animals being able to survive predators long enough to mate? (A) hiding in bushes (B) eating sweets (C) how they're named. (D) listening to music

A:
A
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