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").

[EX Q]: Why is it fall one month and spring another month? (A) the moon has different phases (B) the earth is revolving (C) solar flares appear in cycles (D) the earth is in a different place in its orbit
[EX A]: D

[EX Q]: A person yells inside a garage. Their voice echoes and they hear (A) a bird chirping away (B) a dog barking loudly (C) a car engine rev (D) a shout repeating softer
[EX A]: D

[EX Q]: An plant that requires lots of watering would do better in (A) craters on Earth's moon (B) a sandy, barren desert (C) a lush elm-filled area (D) a large expanse of frozen tundra
[EX A]:
C