TASK DEFINITION: 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.
PROBLEM: Question: When you work out at the gym less your muscles become 
 Option1: smaller 
 Option2: larger 
 Explanation: Muscles that are exercised are bigger and stronger than muscles that are not exercised.

SOLUTION: smaller

PROBLEM: Question: For radio transmissions, longer wavelength waves have 
 Option1: higher or 
 Option2: lower frequencies. 
 Explanation: Longer wavelength electromagnetic waves have lower frequencies, and shorter wavelength waves have higher frequencies.

SOLUTION: lower frequencies.

PROBLEM: Question: Eric has a hydrocarbon with 20 carbon atoms. Rita has a hydrocarbon with 35 carbon atoms. Whose hydrocarbon has fewer isomers? 
 Option1: Eric 
 Option2: Rita 
 Explanation: The more carbon atoms a hydrocarbon has, the greater the number of isomers.

SOLUTION:
Eric