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 of these animals has a young form that looks the most like the adult form?  
 (A) moth (B) human (C) frog (D) butterfly
Example Output: B

Example Input: In a northern state, a room used for growing plants is not allowing enough light to enter for healthy plant growth. Adding windows in walls facing which direction would best solve this problem?  
 (A) north (B) south (C) east (D) west
Example Output: B

Example Input: A ball rolls across the floor and slows down to a stop. Which force caused the ball to slow down?  
 (A) friction (B) gravity (C) magnetic (D) inertia
Example Output:
A