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.

Input: Consider Input: One role of a producer in a food chain is to provide  
 (A) water for plants (B) sunlight for plants (C) nutrients for animals (D) shelter for animals

Output: C


Input: Consider Input: Which organisms contribute most to the decomposition of dead organisms?  
 (A) snakes (B) viruses (C) insects (D) bacteria

Output: D


Input: Consider Input: Which sequence lists the levels of organization in the human body from simplest to most complex?  
 (A) organ system -> tissue -> cell -> organ (B) tissue -> cell -> organ -> organ system (C) organ -> organ system -> tissue -> cell (D) cell -> tissue -> organ -> organ system


Output: D