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: In 2004, Maryland recycled more than 35% of all of the waste the state produced. Which of these benefits does recycling provide to Maryland?  
 (A) fewer wild animals (B) decreased farm crops (C) less trash sent to landfills (D) decreased use of electricity

SOLUTION: C

PROBLEM: When animals use energy, they produce  
 (A) nitrogen (B) iron sulfide (C) oxygen (D) carbon dioxide

SOLUTION: D

PROBLEM: One way humans store energy is by making the molecule glycogen. Clusters of which atoms are rearranged when the body digests plant sugars to make glycogen?  
 (A) hydrogen, nitrogen, carbon (B) oxygen, sulfur, carbon (C) carbon, hydrogen, oxygen (D) nitrogen, carbon, sulfur

SOLUTION:
C