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: Factories often add something to the environment that is (A) helpful (B) productive (C) sanitizing (D) posionous

A: D
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Q: Jeff noticed that the big dipper was in a different spot in the sky at 2am than where it was at 10pm. Why? (A) because of the earth's orbit (B) the stars had rotated (C) Jeff had been instantly transported thousands of miles from where he'd been at 10pm. (D) the earth had turned

A: D
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Q: Crop rotation (A) allows loam to replenish its nutrient supply (B) hurts the overall crop reap (C) allows farmers to take a break (D) prevents fertilizer from working

A:
A
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