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.
--------
Question: A biological community is made up of all the  
 (A) populations living in an area (B) natural resources present in an area (C) members of a species on Earth (D) environments on Earth

Answer: A


Question: The changing appearances of the nighttime sky over the surface of Earth and eclipses of the Moon have provided evidence that  
 (A) Earth is a sphere. (B) Earth supports life. (C) Earth has a layered atmosphere. (D) Earth is covered mostly with water.

Answer: A


Question: The symptoms of influenza infection are partly caused by the  
 (A) rapid genetic mutation in infected cells. (B) consumption of the body's energy resources by viruses. (C) release of toxins by viral particles. (D) body's inflammatory response to infected cells.

Answer:
D