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 likely increased atmospheric CO2 recently? (A) sustainable fisheries (B) electric cars (C) motorcycles (D) ant populations
[EX A]: C

[EX Q]: A bean sprout will beautifully boom if given plenty of access to (A) salted dirt (B) H2O (C) sticky napkins (D) searing heat
[EX A]: B

[EX Q]: If an area of land is sloped to the right and a body of water is on that slope, then the river will flow (A) pollution (B) to the right (C) species (D) to the left
[EX A]:
B