You are given a science question (hard-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.

[EX Q]: Where does evaporation occur at the HIGHEST rate?  
 (A) rivers (B) streams (C) estuaries (D) glaciers
[EX A]: C

[EX Q]: A chameleon can change colors to match its surroundings. This ability helps the chameleon survive because it can  
 (A) stay warm. (B) find a mate. (C) hunt for food. (D) be easily seen.
[EX A]: C

[EX Q]: Which term best describes the life cycle of an insect that reaches the adult stage without being a pupa?  
 (A) incomplete metamorphosis (B) complete metamorphosis (C) alternation of generations (D) spontaneous mutation
[EX A]:
A