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: Evidence of organisms that lived on Earth a long time ago would most likely be found in  
 (A) crystals. (B) lava. (C) sedimentary rock. (D) metamorphic rock.

Answer: C


Question: In which state are molecules of a substance arranged in the most orderly way?  
 (A) gas (B) liquid (C) plasma (D) solid

Answer: D


Question: Which rapid changes are caused by heat from inside Earth?  
 (A) landslides (B) volcanoes (C) avalanches (D) floods

Answer:
B