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: Hundreds of years ago there were fewer people on the Earth than there are today. Because of this, there was 
 Option1: more water 
 Option2: less water. 
 Explanation: Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.
answer:
more water


question:
Question: Will turns down the decibels on his laptop. The sounds become 
 Option1: quieter 
 Option2: louder 
 Explanation: As decibel levels get higher, sound waves have greater intensity and sounds are louder.
answer:
quieter


question:
Question: A chemist compared two substances in the lab. Which substance will have a lower concentration of hydrogen ions? 
 Option1: the substance with the higher pH 
 Option2: the substance with the lower pH 
 Explanation: The lower the pH value is, the greater is the concentration of hydrogen ions and the stronger the acid.
answer:

the substance with the higher pH