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.

[EX Q]: Animals get energy for growth and repair from  
 (A) soil (B) food (C) water (D) air
[EX A]: B

[EX Q]: 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
[EX A]: C

[EX Q]: What type of cell passes on mutations?  
 (A) skin cell (B) nerve cell (C) red blood cell (D) egg cell
[EX A]:
D