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: Dan was excited to try out an electromagnet and was happy when it was very effective. He knew however that if he changed the current he could make it weaker. How should he adjust the current? 
 Option1: decrease it 
 Option2: increase it 
 Explanation: The more current, the stronger the electromagnet.
answer:
decrease it


question:
Question: When we get lower in the air what happens to the temperature? 
 Option1: goes up 
 Option2: goes down 
 Explanation: In the mesosphere, temperature decreases as altitude increases.
answer:
goes up


question:
Question: If Milo is listening to the radio in his room and the room gets colder, what happens to the speed of the sound waves generated by the radio? 
 Option1: increase 
 Option2: decrease 
 Explanation: For a given medium, sound waves travel more slowly at lower temperatures.
answer:

decrease