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: Derek's dad was now at a greater risk of getting a cardiovascular disease, even though nothing about his lifestyle or diet changed. The thing that did change is that his dad is now a 
 Option1: larger age 
 Option2: smaller age 
 Explanation: The older a person is, the greater their chance of developing a cardiovascular disease.
answer:
larger age


question:
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.
answer:
older


question:
Question: If Mona's kidneys are not working correctly and more water is removed from her blood, what will happen to the tint of her blood? 
 Option1: become lighter 
 Option2: become darker 
 Explanation: If the kidneys remove less water from the blood, the blood will look darker, because there is less water in it.
answer:

become lighter