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.

Q: Question: As a balloon deflates there is _____ air pressure forcing air out. 
 Option1: more 
 Option2: less 
 Explanation: Exhaling, or breathing out, decreases the size of the chest, which increases air pressure inside the lungs.

A: more
****
Q: Question: Angel traveled from New York to Des Moines, IA , and experienced _____ pollution. 
 Option1: more 
 Option2: less 
 Explanation: For example, more people on the Earth means more people contributing to global warming and pollution.

A: less
****
Q: Question: A pH value of 9 has a _____ acidity level than a pH value of 8. 
 Option1: lower 
 Option2: higher 
 Explanation: Acids have pH values below 7. The lower the pH value, the more strongly acidic the substance.

A:
lower
****