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: Wave energy from the ocean can be harnessed to power generators to make electricity. Energy from ocean tides can also be used to make electricity. How would you categorize these two sources of energy?  
 (A) Both are renewable. (B) Both are nonrenewable. (C) Wave energy is nonrenewable. Tidal energy is renewable. (D) Wave energy is renewable. Tidal energy is nonrenewable.

A: A
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Q: What causes ocean water to evaporate in the water cycle?  
 (A) energy from the Sun (B) energy from ocean waves (C) energy from Earth's rotation (D) energy from Earth's moon

A: A
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Q: New vaccines for diseases are being developed all the time. How do vaccines most likely help people?  
 (A) Vaccines help prevent illnesses. (B) Vaccines keep the environment cleaner. (C) Vaccines help cure people who are sick. (D) Vaccines kill bacteria that cause infections.

A:
A
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