TASK DEFINITION: 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.
PROBLEM: Which energy source is considered nonrenewable?  
 (A) moving water (B) fossil fuel (C) wind (D) biomass

SOLUTION: B

PROBLEM: Which is a way the agricultural biotechnology industry could have a positive impact on the environment?  
 (A) by producing crops that are virus resistant (B) by making robots to replace large farm machines (C) by reducing the need for countries to import food (D) by increasing the use of wind farms that produce electricity

SOLUTION: C

PROBLEM: The Sun releases light and heat energy that cause changes on Earth. How does the Sun's energy change water?  
 (A) The energy makes liquid water freeze. (B) The energy makes water vapor from liquid water. (C) The energy makes clouds release rain. (D) The energy makes water collect into puddles.

SOLUTION:
B