Definition: 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").
Input: In the natural world, camouflage is used by animals to (A) stand out among their piers (B) avoid being a meal (C) look stylish for others (D) stay warm in the winter
Output:
B