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.

Example Input: Which plant is grown for food?  
 (A) Rice (B) Tobacco (C) Orchid (D) Cotton
Example Output: A

Example Input: The change in fur color of the Arctic hare from brown in the summer to white in the winter is an example of  
 (A) mimicry. (B) heredity. (C) diversity. (D) camouflage.
Example Output: D

Example Input: A large cold front is moving past the school on a hot, humid summer day. Which best describes the type of weather as the cold front passes by?  
 (A) A drought (B) A monsoon (C) A hurricane (D) A thunderstorm
Example Output:
D