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:
As the pull of gravity decreases air molecules (A) explode (B) disperse (C) crowd together (D) party
answer:
B


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


question:
A person can see a large pollutant source when looking at (A) trash heaps (B) land tracts (C) bottle deposits (D) water droplets
answer:

A