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.

[EX Q]: Which location on Earth receives the most direct sunlight?  
 (A) the deserts (B) the South Pole (C) the equator (D) the Western Hemisphere
[EX A]: C

[EX Q]: A model of the Moon would be different from a model of Earth in that the Moon should  
 (A) be smaller than Earth. (B) have a source of light inside. (C) have a smoother surface than Earth. (D) have fewer impact craters on the surface.
[EX A]: A

[EX Q]: When a student uses the equation, mass multiplied by change in temperature multiplied by specific heat, what is being calculated? q = m \times C \times \Delta T  
 (A) a phase change (B) stored energy (C) heat convection (D) heat gain or heat loss
[EX A]:
D