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.

Input: Consider Input: Why would animals most likely have to leave an area during a drought?
(A) to find mates (B) to find shelter (C) to escape predators (D) to find water and food

Output: D

Input: Consider Input: Fertilizers can enable farmers to grow the same crop in a field for several years in a row. Farmers who use less fertilizer often rotate their crops by planting the crop one year and legumes, such as beans and clover, the following year. Fertilizer use and crop rotation with legumes both increase the availability of which of the following nutrients in soil?
(A) calcium (B) nitrogen (C) oxygen (D) protein

Output: B

Input: Consider Input: A person named Leonardo da Vinci studied many things including animals, geology, clouds, and flight. His study of birds helped him design the first parachute. Everything he saw made him ask how and why. Which human quality most likely made this person want to study many different things?
(A) duty (B) wisdom (C) kindness (D) curiosity
Output: D