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").

Despite what some think, instead around themselves, our planet spins around (A) pluto (B) the moon (C) the milky way (D) the sun
D

2000 years ago, this method would likely have brought sand from the coast to the desert (A) the pyramids often eroded, making their own sand (B) constant breezes over time (C) human automobiles transfer materials (D) the space shuttle moved sand great distances
B

If a climate becomes colder over time (A) bears that have sparse fur with thrive (B) bears that develop thin pelts will thrive (C) bears that carry little fat will thrive (D) bears that grow heavier pelt will survive
D