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: If Milo is listening to the radio and he moves closer to the radio in the room, what happens to the sound waves entering his ear? 
 Option1: they spread out less 
 Option2: they spread out more 
 Explanation: The farther the sound waves travel away from the source, the more spread out their energy becomes.
they spread out less

Question: Objects that are closer together have a _____ force of gravity. 
 Option1: stronger 
 Option2: weaker 
 Explanation: Objects that are closer together have a stronger force of gravity.
stronger

Question: Will has two screws of the same length. One has 20 threads; the other has 200 threads. The screw with _____ threads likely needs less force to penetrate wood. 
 Option1: 20 
 Option2: 200 
 Explanation: Therefore, if the threads on a screw are closer together, you need to apply less force to penetrate the wood or other object.

200