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: A red flowered plant (RR) is crossed with a white flowered plant (WW) and produces plants with pink flowers (RW). If two pink flowered plants are crossed, what color offspring could be produced?
(A) red, white, and pink (B) red and white (C) pink and red (D) pink and white

Output: A

Input: Consider Input: Vehicle exhaust contains a form of pollution called particulate matter. Technologies are being developed to reduce the amount of particulate matter in exhaust. A vehicle that produces less particulate matter would have the greatest impact on which aspect of human health?
(A) heart health (B) respiratory health (C) the rate of birth defects (D) weight and physical fitness

Output: B

Input: Consider Input: Every organism in an ecosystem receives energy from another source. Which of these organisms receives its energy directly from the Sun?
(A) deer (B) fungus (C) grass (D) hawk
Output: C