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]: Which is a process that occurs during photosynthesis?  
 (A) Plants take in oxygen and release sugar. (B) Plants take in sugar and release minerals. (C) Plants take in minerals and release carbon dioxide. (D) Plants take in carbon dioxide and release oxygen.
[A]: D


[Q]: As Earth revolves around the Sun, the number of daylight hours varies from place to place. In which location would the number of daylight hours remain constant?  
 (A) North Pole (B) Prime Meridian (C) Equator (D) Antarctica
[A]: C


[Q]: When coal is burned to produce electricity, the electrical energy produced is less than the potential energy in the coal. Which best explains this observation?  
 (A) As coal is heated, some of the molecules move so fast that they are destroyed. (B) Some of the energy in coal is destroyed by the intense heat required to release its potential energy. (C) Some of the potential energy in coal is converted into forms of energy other than electricity. (D) The amount of potential energy in fuels is overestimated.
[A]:
C