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 tool is best used to collect information about the weather?  
 (A) ruler (B) stopwatch (C) thermometer (D) collecting net

SOLUTION: C

PROBLEM: Which is a process that occurs during photosynthesis?  
 (A) Plants take in oxygen and release sugar. (B) Plants take in sugar and release minerals. (C) Plants take in minerals and release carbon dioxide. (D) Plants take in carbon dioxide and release oxygen.

SOLUTION: D

PROBLEM: An earthquake occurs in western Nevada. What most likely causes the earthquake?  
 (A) stress due to the movement of Earth's crustal plates (B) gravitational variation due to the Moon's orbit around Earth (C) temperature variation due to Earth's orbit around the Sun (D) rotational imbalance due to changes in the location of Earth's poles

SOLUTION:
A