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: A snail's shell provides the snail with  
 (A) food. (B) energy. (C) protection. (D) transportation.

Answer: C


Question: Which is the best tool for measuring the temperature of lake water?  
 (A) Meter stick (B) Balance (C) Graduated cylinder (D) Thermometer

Answer: D


Question: In an energy pyramid, the total energy available for consumption from one trophic level to the next one above it is  
 (A) reduced. (B) conserved. (C) multiplied. (D) evenly distributed.

Answer:
A