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: A teacher breaks a bar of pure copper into two different sized pieces. Which is the most likely difference between the two pieces?  
 (A) mass (B) texture (C) boiling point (D) melting point

SOLUTION: A

PROBLEM: A light-year is a measure of  
 (A) time. (B) energy. (C) distance. (D) direction.

SOLUTION: C

PROBLEM: Which item is used for protection from chemical splashing?  
 (A) compass (B) hand lens (C) microscope (D) safety goggles

SOLUTION:
D