instruction:
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 the following forms of energy is released or absorbed in most chemical reactions?
(A) light energy (B) electrical energy (C) sound energy (D) heat energy
answer:
D

question:
A student placed a small chip of limestone into a hydrochloric acid solution, and carbon dioxide gas was released. The carbon dioxide provided evidence that
(A) only a physical change occurred. (B) a chemical change occurred. (C) only a loss of mass occurred. (D) the formation of an element occurred.
answer:
B

question:
Tectonic motion caused tension between plates in Earth's crust. A sudden release of this energy occurred. Based on this information, which event happened?
(A) subsidence (B) earthquake (C) volcanic eruption (D) meteoroid impact
answer:
B