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 can be used to pass information from one person to another? (A) an invention by Marconi (B) an invention by Newton (C) an invention by McCormick (D) an invention by Pasteur
[EX A]: A

[EX Q]: A learned behavior is exhibited when (A) squinting in bright light (B) nailing up a picture frame (C) blinking and gulping air (D) inhaling and exhaling during sleep
[EX A]: B

[EX Q]: Decomposer is a kind of role in our (A) environment (B) play (C) home (D) army
[EX A]:
A