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.

Example Input: A scientific guess about the cause and effect of an event is called
(A) a variable. (B) a theory. (C) a hypothesis. (D) an observation.
Example Output: C

Example Input: During which stage of an insect's life cycle does the female lay eggs?
(A) nymph (B) larva (C) pupa (D) adult
Example Output: D

Example Input: Joanne wants to investigate factors that affect different patterns of the flight of bees. Which step in the scientific method must she follow before forming a hypothesis?
(A) record data of numbers of bees (B) measure the distances of bee flights (C) draw a conclusion about when bees fly (D) gather information about flight patterns
Example Output:
D