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.

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


[Q]: A scientist combines oxygen and hydrogen to form water. This combination illustrates that water is  
 (A) an atom. (B) an element. (C) a mixture. (D) a compound.
[A]: D


[Q]: Scientists found evidence of a fish that lived millions of years ago. The fish had features that were possibly used to move on land. This fish is now extinct. What scientific evidence did the scientists most likely find that confirmed the existence of this fish?  
 (A) a fossil (B) a description (C) a photograph (D) a cave drawing
[A]:
A