instruction:
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").
question:
What does gravity cause substances on a planet? (A) things to move sideways (B) things to be moved upwards (C) things to descend to the lowest surface possible (D) things to stay in the same place
answer:
C

question:
Which would likely render a habitat dead? (A) planting new trees (B) a light drizzle (C) a human camping (D) an apartment complex
answer:
D

question:
What's usually hot in temperature? (A) the Sahara (B) Minnesota (C) Alaska (D) corpses
answer:
A