instruction:
You are given a science question (hard-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 physical characteristic of Earth is similar to a physical characteristic of the Moon?  
 (A) its climate (B) its great seas (C) its atmosphere (D) its mountain ranges
answer:
D


question:
Which of these do all cells release?  
 (A) sugar (B) water (C) energy (D) oxygen
answer:
C


question:
Water is found underground in many areas. Pumping large amounts of water from an underground limestone area will most likely cause which to occur?  
 (A) faulting in the limestone (B) flooding of streams around the area (C) the land above the limestone to sink (D) a change in the type of rock that forms in that area
answer:

C