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: The Piedmont and Coastal Plains regions in Maryland produce crops such as corn, soybeans, wheat, tobacco, tomatoes, and apples. Which environmental factor most likely influences which crops are grown in these regions?  
 (A) soil quality (B) wind speeds (C) bird migration (D) water temperature
Example Output: A

Example Input: A snail's shell provides the snail with  
 (A) food. (B) energy. (C) protection. (D) transportation.
Example Output: C

Example Input: A lumber company plants new trees where a forest once stood. This is an example of  
 (A) conserving resources. (B) consuming resources. (C) recycling resources. (D) replacing resources.
Example Output:
D