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: If Milo wants to make his water saltier and begins removing salt to the glass, what happens to the density of the glass of water?
Option1: decreases
Option2: increases
Explanation: If salt is added to a volume of water, there are more molecules in the same volume, so the water is denser.
decreases

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.
less

Question: Evan measures the pH of the ocean at 5. Last century it measured at 6. A(n) _____ in greenhouse gases likely resulted in this change.
Option1: increase
Option2: decrease
Explanation: An increase in greenhouse gases will increase the changes that are already being seen including in ocean acidity.
increase