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.

Q: The Grand Canyon is an example of  
 (A) erosion. (B) deposition. (C) an earthquake. (D) volcanic activity.

A: A
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Q: What is an environmental threat posed by oil and gas acquisition and transport that is not posed by the acquisition and transport of the energy resources uranium, and wood?  
 (A) habitat change (B) vehicle pollution (C) pipeline leaks (D) soil compaction and loss

A: C
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Q: What is the most important thing a cylinder, a measuring cup, and a beaker all have in common?  
 (A) They all hold liquids. (B) They can all be made of glass. (C) They can all be marked in milliliters. (D) They can all be used to measure the volume of a liquid.

A:
D
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