You are given a science question (easy-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]: Which object works best when reflecting light?  
 (A) mirror (B) camera (C) binoculars (D) eyeglasses
[EX A]: A

[EX Q]: In order to maintain good health, humans should  
 (A) eat foods high in fat (B) exercise regularly (C) drink alcohol often (D) smoke tobacco occasionally
[EX A]: B

[EX Q]: Which of the following animal features most helps the animal move around in its habitat?  
 (A) A bird's sharp beak (B) A cow's tail (C) A sea turtle's flippers (D) A black bear's fur
[EX A]:
C