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:
Plants grow because they (A) decide the time is right (B) can breathe a lot of air (C) use what people breathe out to survive (D) take photos of other plants
answer:
C


question:
pushing against a rolling boulder will decrease its (A) size (B) height (C) impetus (D) ambitions
answer:
C


question:
A person can know if they need a down vest by checking the (A) thermograph (B) tunnels (C) graveyard shift (D) sidewalk
answer:

A