instruction:
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.
question:
Question: When Shane goes swimming in warmer water, he can move about slowly, whereas in cooler water, Shane's movement is 
 Option1: faster 
 Option2: slower 
 Explanation: When a volume of water is cooled, the molecules move less vigorously, so same number of molecules takes up less space and the water is denser.
answer:
faster


question:
Question: The least massive objects have _____ gravity than more massive objects. 
 Option1: higher 
 Option2: lower 
 Explanation: Less massive objects also have less gravity than more massive objects.
answer:
lower


question:
Question: If Mona is observing the atmosphere and measuring the amount of ozone in it, what happens to the amount of UV rays that will reach the ground if she notices the amount of ozone in the stratosphere is decreasing? 
 Option1: increase 
 Option2: decrease 
 Explanation: With less ozone in the stratosphere, more UV rays reach the ground.
answer:

increase