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: If Mona is exploring and aquifer and she dives deeper down into it, what happens to the levels of fossil water she encounters? 
 Option1: they increase 
 Option2: they decrease 
 Explanation: Deeper aquifers typically contain older 'fossil water.'

SOLUTION: they increase

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

SOLUTION: cold

PROBLEM: Question: If Jim has two variables that are part of an inverse relationship, what will happen to the second variable if he decreases the first variable? 
 Option1: it increases 
 Option2: it decreases 
 Explanation: In an inverse relationship, when one variable increases, the other variable decreases.

SOLUTION:
it increases