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 describes a specific characteristic necessary for survival in the desert?  
 (A) conserving water (B) hiding from predators (C) hibernating for long periods (D) producing many offspring
Example Output: A

Example Input: One role of a producer in a food chain is to provide  
 (A) water for plants (B) sunlight for plants (C) nutrients for animals (D) shelter for animals
Example Output: C

Example Input: Which of the following best describes the climate of an area?  
 (A) the high temperature and wind speed for six months (B) the high temperature and wind speed each day for one year (C) the temperature and precipitation every hour for one day (D) the average temperature and total precipitation each month for ten years
Example Output:
D