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: You wish to closely observe a small insect. Which tool is the best to use?  
 (A) a balance (B) a test tube (C) a telescope (D) a magnifying glass

A: D
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Q: Which best explains how nutrients get into soil?  
 (A) through exposure to air (B) by absorbing sunlight (C) through decaying matter (D) by rocks eroding

A: C
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Q: A black bear eats many different things, including grasses, roots, and berries. It also eats insects, fish, and other small animals. Which of these BEST describes a black bear?  
 (A) Omnivore (B) Carnivore (C) Herbivore (D) Producer

A:
A
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