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: The reason that things don't rotate around the sun is because it is 
 Option1: small 
 Option2: large 
 Explanation: The greater the mass of the objects, the stronger the gravitational force of attraction between them.

SOLUTION: small

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

PROBLEM: Question: Mahana was excited to see the nuclear bomb test and decided to sail closer for a better look. As he approaches the lowest levels of radioactivity at the test site would the rate of clicking on his Geiger counter get 
 Option1: faster or 
 Option2: slower 
 Explanation: The faster the clicks of a Geiger counter occur, the higher the level of radiation.

SOLUTION:
slower