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: Erin is trying to get her solution to have a pH as far from zero as possible. The best way for Erin to do that is to have the acidity of the solution
Option1: decrease
Option2: increase
Explanation: The more acidic a solution is, the closer its pH value will be to 0

A: decrease
****
Q: Question: Compared to the blue super giant star Rigel, would the Sun, which is a yellow dwarf star, be
Option1: hotter?
Option2: cooler
Explanation: But, in stars, the bluer the star, the hotter it is, and the redder it is, the older and colder it is.

A: cooler
****
Q: Question: Milo loved to make things out of clay. If he made a clay ball, what would happen to the ball's gravitational force if he added extra clay to it?
Option1: decrease
Option2: increase
Explanation: The gravitational force increases with mass and decreases with the distance between the bodies.

A:
increase
****