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: How does erosion impact a river? (A) enlargening (B) warming (C) heightening (D) shrinking

Answer: A


Question: If you had a hammer, you would find ____ nails made of ____ (A) wood; wood (B) iron; wood (C) wood; iron (D) iron; iron

Answer: D


Question: Galileo Galilei made improvements to the telescope to make better observations of what? (A) plants (B) people (C) space games (D) space rocks

Answer:
D