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 two processes occur during the life spans of all animals?  
 (A) hibernation and migration (B) growth and development (C) changing color and shedding fur (D) building nests and communication

SOLUTION: B

PROBLEM: Which unit of measurement describes an object's length?  
 (A) meter (B) kilogram (C) liter (D) degree

SOLUTION: A

PROBLEM: In the rock cycle an igneous rock forms from  
 (A) cooling temperatures (B) high pressure and heat (C) weathering and erosion (D) compacted plant remains

SOLUTION:
A