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").
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Question: If you fly from Europe to Australia in December, when you arrive you will most likely want to wear: (A) heavy coat (B) mittens (C) shorts (D) ski mask

Answer: C


Question: Which is the least massive? (A) the Earth (B) the moon (C) the sun (D) the solar system

Answer: B


Question: Which would increase atmospheric carbon by the lowest degree? (A) trees (B) humans (C) cattle (D) dogs

Answer:
A