instruction:
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.
question:
Question: Robby noticed a weak electrostatic force between two charged objects. He wanted to decrease the strength of this force. So how should he position them? 
 Option1: Closer together 
 Option2: Farther apart 
 Explanation: The closer the charged objects are, the stronger the electrostatic force.
answer:
Farther apart


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


question:
Question: Will smashes a rock. The total surface area of the rock has now 
 Option1: decreased 
 Option2: increased 
 Explanation: As rock breaks into smaller pieces, the surface area of the pieces increases.
answer:

increased