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: A chemist compared two substances in the lab. Which substance will have a higher 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.

A: the substance with the lower pH
****
Q: Question: Derek needs to be able to read really small print, so he reaches for a straight lens magnifying glass, which can magnify 
 Option1: more 
 Option2: less 
 Explanation: The more curved the convex lens is in a magnifying glass, the greater its ability to magnify objects.

A:
less
****