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 object works best when reflecting light?  
 (A) mirror (B) camera (C) binoculars (D) eyeglasses

SOLUTION: A

PROBLEM: Which item is designed to change electrical energy into heat energy?  
 (A) Alarm clock (B) Hand dryer (C) Fan (D) Telephone

SOLUTION: B

PROBLEM: A summer day begins with a clear, sunny sky. Then, dark clouds form in the afternoon. What type of weather will MOST likely happen next?  
 (A) Sleet and snow (B) Rain and thunder (C) Wind and snow (D) Fog and wind

SOLUTION:
B