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]: Which two forces are likely the cause of canyons? (A) water plus fire (B) fire and brimstone (C) water plus gravity (D) H20 and lemmings
[EX A]: C

[EX Q]: Flora requires chlorophyll to (A) moonlight (B) undergo natural development (C) starlight (D) dairy
[EX A]: B

[EX Q]: Which is likely to be reflecting the most light? (A) a desert landscape (B) a forest landscape (C) an arctic landscape (D) a rural landscape
[EX A]:
C