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: Something with less hydrogen ions would have what pH value? 
 Option1: high 
 Option2: low 
 Explanation: With a higher the concentration of hydrogen ions, a solution is more acidic and has a lower pH.
answer:
high


question:
Question: If Mona is digging and she uncovers more rock, what happens to the total area that chemical weathering can occur? 
 Option1: increase 
 Option2: decrease 
 Explanation: With more surfaces of the rocks exposed, there are more places for chemical weathering to occur.
answer:
increase


question:
Question: A sound wave, very far away from its source, is spread out _____ than near its origin. 
 Option1: more 
 Option2: less 
 Explanation: The farther the sound waves travel away from the source, the more spread out their energy becomes.
answer:

more