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.

[Q]: Question: As Dean was surveying the town, he noted that the more kids that the neighbors had, the population of the town went 
 Option1: down 
 Option2: up 
 Explanation: With exponential growth, the population starts out growing slowly. As population size increases, the growth rate also increases.
[A]: up


[Q]: Question: If Mona is a sculptor and she is making two clay vases, what happens if she increases the mass of the vases by adding clay to them? 
 Option1: gravitational force of attraction is stronger 
 Option2: gravitational force of attraction is weaker 
 Explanation: The greater the mass of the objects, the stronger the gravitational force of attraction between them.
[A]: gravitational force of attraction is stronger


[Q]: Question: The moon is unable to hold in all the planets because it is 
 Option1: more massive 
 Option2: less massive 
 Explanation: The greater the mass of the objects, the stronger the gravitational pull between them.
[A]:
less massive


