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: If you keep something whole before putting it into water it will dissolve 
 Option1: slower 
 Option2: faster 
 Explanation: Therefore, increasing the surface area of solid reactants increases the reaction rate.
[A]: slower


[Q]: Question: Milo has been cutting his nails out for a very long time. As his nails get shorter, what happens to the amount of cells added to them? 
 Option1: increase 
 Option2: decrease 
 Explanation: As the nail grows, more cells are added at the nail bed.
[A]: decrease


[Q]: Question: Evan measures the pH of the ocean at 7. 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.
[A]:
decrease