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]: What uses eyes to see by sensing light? (A) trees (B) algae (C) worms (D) elephants
[EX A]: D

[EX Q]: A person who wants to visit a desert will be sure to pack more (A) winter boots (B) thermal underwear (C) tan shorts (D) snowsuits
[EX A]: C

[EX Q]: If two objects have the same charge then what will they do to eachother? (A) repel attackers (B) approach (C) pull (D) push away
[EX A]:
D