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]: Cows know there is salt in a mineral lick because (A) they have receptors on their tongue that allow them to experience spice and seasonings (B) a cow in the ocean told them it was there (C) it's on their side of the pasture's fence (D) they evolved where there were great redwood trees
[EX A]: A

[EX Q]: Butterflies will often times have coloring that at look like eyes on their wings for (A) to look pretty (B) fun (C) to see flowers (D) protection
[EX A]: D

[EX Q]: Pressing the power button on an mp3 player (A) turns on the dishwasher (B) switches a simple series circuit on or off (C) fills the bathtub with water (D) turns on the microwave
[EX A]:
B