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: A student counts ants in an ant colony every day at the same time. The student writes the date of observation in one column in a notebook and the number of ants counted on each date in a second column. Which best describes how the student arranged the information?  
 (A) pie chart (B) data table (C) bar graph (D) scatterplot

A: B
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Q: Which form of energy is found in food?  
 (A) chemical (B) electrical (C) sound (D) mechanical

A: A
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Q: What would be the best way to determine the role of squirrels in a forest ecosystem?  
 (A) measure the length and mass of several squirrels (B) determine the genes that control squirrel traits (C) make field observations of squirrels in their natural habitat (D) read articles about the energy and nutrient requirements of squirrels

A:
C
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