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.

Q: Which method is the best safety procedure when working around open flames?  
 (A) wear an acid-resistant apron (B) wash your hands (C) tie back long hair (D) use an electric fan to blow gases from the flame

A: C
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Q: What is the downward movement of water through pores and other spaces in soil due to the force of gravity?  
 (A) percolation (B) evaporation (C) precipitation (D) condensation

A: A
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Q: Earth's rotation (turning on its axis) causes  
 (A) the seasons to change. (B) the Moon to appear as different shapes. (C) day and night. (D) solar eclipses.

A:
C
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