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: Many sports stadiums use grass, but some use fake grass called artificial turf. Artificial turf is made of fibers that look like real grass. In which way is this technology most likely beneficial?  
 (A) It uses less water. (B) It produces more heat. (C) It releases less moisture. (D) It absorbs more carbon dioxide.

A: A
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Q: A delta at the mouth of a river is the direct result of  
 (A) runoff from sewage. (B) deposition of sediment. (C) an ancient glacier that passed through. (D) an underground river flowing to the ocean.

A: B
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Q: A student sets up an investigation to test the strength of magnets. He has several magnets of different sizes, shapes, and masses. He uses the magnets to lift metal paper clips. How is the strength of a magnet defined in the investigation?  
 (A) by the mass of the magnet lifting the metal paper clips (B) by the size of the magnet lifting the metal paper clips (C) by the number of metal paper clips lifted by the magnet (D) by the time the metal paper clips stay on the magnet

A:
C
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