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 material best conducts heat and electricity?  
 (A) metal (B) plastic (C) rubber (D) wood

SOLUTION: A

PROBLEM: In some locations, squirrels sleep for long periods of time during the winter months. Which of the following most likely causes these squirrels to sleep for long periods of time?  
 (A) increase in humidity (B) decrease in temperature (C) clouds forming in the sky (D) winds blowing in the night

SOLUTION: B

PROBLEM: An octopus releases black ink into the water when feeling threatened. What does this most likely help an octopus do?  
 (A) find shelter (B) hunt for food (C) swim faster (D) escape enemies

SOLUTION:
D