TASK DEFINITION: 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.
PROBLEM: Which of the following happens in our solar system?  
 (A) Earth revolves around the sun once per day. (B) The moon revolves around Earth once per day. (C) Earth revolves around the sun once per year. (D) The moon revolves around Earth once per year.

SOLUTION: C

PROBLEM: Which is a fact rather than an opinion about earthquakes?  
 (A) Earthquakes occur along fault lines. (B) Earthquakes are worse than hurricanes. (C) Earthquakes are bad for all local businesses. (D) Earthquakes always cause major damage to homes.

SOLUTION: A

PROBLEM: A student places soil in a plastic container to make a home for some worms. The student cuts holes in the top of the container because the worms need  
 (A) space to move (B) air to breathe (C) sunlight to grow (D) sound to communicate

SOLUTION:
B