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.
--------
Question: Which material best conducts heat and electricity?  
 (A) metal (B) plastic (C) rubber (D) wood

Answer: A


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

Answer: A


Question: Erin placed her shamrock plant in a dark corner. Soon she saw that the leaves had tilted toward her window. What did the plant need most from the window?  
 (A) sunlight during the day (B) air during the day (C) darkness at night (D) warmth at night

Answer:
A