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: Four objects are on a wooden ramp. Which object is most likely to roll off the ramp if it is pushed gently?  
 (A) flat eraser (B) round ball (C) bent paper clip (D) wooden cube
Example Output: B

Example Input: What causes ocean water to evaporate in the water cycle?  
 (A) energy from the Sun (B) energy from ocean waves (C) energy from Earth's rotation (D) energy from Earth's moon
Example Output: A

Example Input: Which event would most likely result in more food for organisms that are scavengers?  
 (A) Fish die and sink to the bottom of a pond. (B) Trees take up and store water with roots. (C) Beavers build a new dam and lodge. (D) Plants get more sunshine and water.
Example Output:
A