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

Answer: C


Question: Martin is writing a report for science class about how the tilt of Earth affects living organisms. Which subject should Martin include in his report that is directly affected by Earth's tilt?  
 (A) night and day (B) cloud formation (C) phases of the Moon (D) changing of the seasons

Answer: D


Question: Which is a nonrenewable natural resource that is used to make electrical energy?  
 (A) coal (B) wind (C) water (D) thermal

Answer:
A