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: Theresa decreased the amount of water in her pool. Rock would likely melt 
 Option1: faster 
 Option2: slower 
 Explanation: As the amount of water increases, the melting point of rock decreases.
answer:
slower


question:
Question: When it is very warm what happens to the speed of items? 
 Option1: speed up 
 Option2: slow down 
 Explanation: For a given medium, sound waves travel more slowly at lower temperatures.
answer:
speed up


question:
Question: Tina is speeding on the highway, and a cop is sat on the road with a radar gun to see who to pull over. The cop's gun begins to detect a low frequency, with waves reflected being bunched up. The car was going 
 Option1: faster 
 Option2: slower 
 Explanation: A: As the car approaches the radar gun, the reflected microwaves get bunched up in front of the car. Therefore, the waves the receiver detects have a higher frequency than they would if they were being reflected from a stationary object. The faster the car is moving, the greater the increase in the frequency of the waves.
answer:

slower