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: When we dig up rocks the deeper we get the rocks get 
 Option1: older 
 Option2: younger 
 Explanation: Older rocks are at the bottom and younger rocks are at the top.
older

Question: When we are trying to move through the thermosphere the lower we go the _____ it will feel 
 Option1: colder 
 Option2: warmer 
 Explanation: In the thermosphere, temperatures increase as altitude increases.
colder

Question: Jan and Brad were able to feed themselves only spending ten dollars a day total. After they had their child, they had to spend fifteen dollars a day total, because their familial population had 
 Option1: shrank 
 Option2: grown 
 Explanation: More people need more resources.

grown