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.

Input: Consider Input: Question: What would happen to the force of gravity between two soccer balls if Jim moved them closer together? 
 Option1: it would increase 
 Option2: it would decrease 
 Explanation: Objects that are closer together have a stronger force of gravity between them.

Output: it would increase


Input: Consider Input: Question: Mike wants his voice to travel slowly, so he will speak in a room that is 
 Option1: colder 
 Option2: warmer 
 Explanation: For a given medium such as air, sound has a slower speed at lower temperatures.

Output: colder


Input: Consider Input: Question: Would a diesel powered submarine release less pollution if it were running on 
 Option1: its diesel engine 
 Option2: its battery backup power? 
 Explanation: Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids.


Output: its battery backup power?