instruction:
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:
One role of a producer in a food chain is to provide  
 (A) water for plants (B) sunlight for plants (C) nutrients for animals (D) shelter for animals
answer:
C


question:
Owen tested a physical property of a mineral. He rubbed a mineral sample on a piece of white tile. The mineral left a red mark on the tile. Which of the following physical properties of the mineral was Owen most likely testing?  
 (A) cleavage (B) hardness (C) luster (D) streak
answer:

D