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: Obstacles that might impede a dune are (A) God (B) emotions (C) cacti (D) cancers

Answer: C


Question: Thirteen times a year, roughly, the moon (A) crashes into the Earth (B) is orbited by the Earth (C) lights up the Earth (D) completely rotates the Earth

Answer: D


Question: If a plot of land a thousand miles wide has water, food, shelter, clean air and a good climate, then (A) organisms will struggle with it (B) organisms will populate it (C) organisms will die off (D) organisms will avoid it

Answer:
B