You are given a science question (hard-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: Louis Pasteur created a process that reduced the amount of bacteria in milk. How does this process most likely benefit people?  
 (A) by helping to prevent food allergies (B) by encouraging people to eat healthy foods (C) by helping to keep people from becoming ill (D) by curing diseases caused by lack of vitamins

A: C
****
Q: The body of a fish is covered by scales for  
 (A) decoration. (B) protection. (C) coloration. (D) reproduction.

A: B
****
Q: Which is true about the Sun and Earth?  
 (A) Earth gives light and heat energy to the Sun. (B) Earth gives only heat energy to the Sun. (C) The Sun gives light and heat energy to Earth. (D) The Sun gives only light energy to Earth.

A:
C
****