You are given a question or fill-in-the-blank question, two answer options (Option1 and Option2) and an Explanation. Your task is to find the correct answer (return the string of the correct option, not option1/2) for the given question from the given options and using explanation.

[EX Q]: Question: Yolanda moved to Denver where it is 5000 feet above sea level. The atmosphere here is considered 
 Option1: dense 
 Option2: thin 
 Explanation: The density of the atmosphere decreases with an increase in the height above sea level (altitude).
[EX A]: thin

[EX Q]: Question: Jeff removes energy from his water. The water becomes more 
 Option1: cold 
 Option2: hot 
 Explanation: The temperature of matter increases with the added energy.
[EX A]: cold

[EX Q]: Question: Which of these items has more gravitational strength? 
 Option1: the moon 
 Option2: earth 
 Explanation: Less massive objects also have less gravity than more massive objects.
[EX A]:
earth