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]: Skunks spray a strong-smelling liquid to ___.  
 (A) get rid of wastes (B) attract prey (C) defend themselves (D) help nearby plants grow
[A]: C


[Q]: Cell division is necessary for an organism to  
 (A) obtain nutrients. (B) grow and reproduce. (C) make proteins. (D) conserve matter and energy.
[A]: B


[Q]: Which of these warms most of the air, water, and land on Earth?  
 (A) Coal (B) Electricity (C) Sunlight (D) Wind
[A]:
C