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 is a major difference between the life cycles of different types of plants?  
 (A) the way they die (B) the energy they use (C) the way they reproduce (D) the way they make food

SOLUTION: C

PROBLEM: Genes are located on chromosomes which are composed of  
 (A) DNA. (B) RNA. (C) ATP. (D) ADP.

SOLUTION: A

PROBLEM: How do decomposers obtain their food?  
 (A) hunting and killing prey for food (B) changing carbon dioxide and water into food (C) absorbing food from dead organisms (D) producing food from oxygen and sunlight

SOLUTION:
C