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: Which energy source is nonrenewable?  
 (A) sunlight (B) biomass (C) wind (D) fossil fuel

SOLUTION: D

PROBLEM: What is the relationship between tissues and organs?  
 (A) Organs are made from one type of tissue. (B) Tissues are made from one type of organ. (C) Tissues are made from different types of organs. (D) Organs are made from different types of tissues.

SOLUTION:
D