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.

[EX Q]: The Sun is classified as  
 (A) an organism (B) a decomposer (C) a star (D) a planet
[EX A]: C

[EX Q]: Which tool is best used to collect information about the weather?  
 (A) ruler (B) stopwatch (C) thermometer (D) collecting net
[EX A]: C

[EX Q]: Which tool would best help a person observe the parts of a plant cell?  
 (A) hand lens (B) telescope (C) binoculars (D) microscope
[EX A]:
D