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: Rich breathed out. When he breathes _____ his chest seems larger. 
 Option1: in 
 Option2: out 
 Explanation: Inhaling, or breathing in, increases the size of the chest, which decreases air pressure inside the lungs.

SOLUTION: out

PROBLEM: Question: Erin is trying to get her solution to have a pH as far from zero as possible. The best way for Erin to do that is to have the acidity of the solution 
 Option1: decrease 
 Option2: increase 
 Explanation: The more acidic a solution is, the closer its pH value will be to 0

SOLUTION: decrease

PROBLEM: Question: Evan is picking up rocks on the beach. Some rocks are very basic small ones, and others are large, clumpy stones with different textures. The rocks that are less difficult to identify had amounts of metamorphism that were 
 Option1: more extreme 
 Option2: less extreme 
 Explanation: The more extreme the amount of metamorphism, the more difficult it is to tell what the original rock was.

SOLUTION:
less extreme