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.

[EX Q]: While Anna was testing a circuit, she dropped a light bulb. What is the safest thing Anna can do?
(A) get a new bulb to finish the test (B) push the broken glass under a table (C) tell her teacher that she broke the bulb (D) ask her partner to help pick up the broken glass
[EX A]: C

[EX Q]: The most significant human-induced impact on Earth's atmosphere comes from the use of which energy resource?
(A) flowing water (B) fossil fuels (C) sunlight (D) winds
[EX A]: B

[EX Q]: A plant is discolored and has large brown blotches on its leaves. This condition is most likely caused by
(A) pollination. (B) photosynthesis. (C) nourishment. (D) disease.
[EX A]:
D