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: Which of these technologies helps a power company use renewable energy for the production of electricity?  
 (A) hydroelectric power (B) nuclear power plants (C) natural gas generators (D) coal-fired power plants

Answer: A


Question: A student finds an animal in the wild. He decides it is a bird because it has  
 (A) fins. (B) scales. (C) feathers. (D) four legs.

Answer: C


Question: Mr. Thompson's class was discussing the topic of convergent boundaries. He asked four students to identify a landform that was formed through the collision of two tectonic plates. Which landform should the students identify as being formed by convergent boundaries?  
 (A) North American Continent (B) Mid-Atlantic Ridge (C) Hawaiian Islands (D) Marianas Trench

Answer:
D