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.
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Question: Question: The air gets thinner when it is 
 Option1: hot 
 Option2: cold 
 Explanation: Increasing air temperature decreases atmospheric pressure.

Answer: hot


Question: Question: Jan is taking a class where she is learning about atoms. She knows that atoms have electrons, and that atoms that are smaller have 
 Option1: more electrons 
 Option2: fewer electrons 
 Explanation: Bigger atoms have more electrons.

Answer: fewer electrons


Question: Question: A hydrocarbon with more carbon atoms will have _____ isomers. 
 Option1: fewer 
 Option2: many 
 Explanation: The more carbon atoms a hydrocarbon has, the greater the number of isomers.

Answer:
many