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 is an example of a form of electrical energy?  
 (A) lightning (B) windmill (C) radio waves (D) sound waves

A: A
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Q: Some events on Earth happen instantly while others take thousands of years to occur. Which process takes the longest time to complete?  
 (A) rivers rising due to storms and floods (B) evaporation of water from the leaves of a plant (C) weathering of a rock to form small rocks and sand (D) movement of small pieces of rock by flowing water

A: C
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Q: Which is the best way to help prevent the flu from becoming a pandemic?  
 (A) getting a vaccination (B) taking antibiotics (C) eating fruits and vegetables (D) washing hands often

A:
A
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