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: What happens to the size of a population if the number of predators for that population is decreased? 
 Option1: gets bigger 
 Option2: gets smaller 
 Explanation: An increase in predators, the emergence of a new disease, or the loss of habitat are just three possible problems that will decrease a population.
[A]: gets bigger


[Q]: Question: Lana is watching two waterfalls. The first waterfall is very steep, and the other is just a slope. The waterfall which will have the least erosion at the bottom is the one with the water which falls 
 Option1: slower 
 Option2: faster 
 Explanation: Water flowing over a steeper slope moves faster and causes more erosion.
[A]: slower


[Q]: Question: You can find tables that show the pH value of different fruits and vegetables. The fruits such as oranges are very acidic so they have a pH value that is 
 Option1: higher 
 Option2: lower 
 Explanation: Acids have pH values below 7. The lower the pH value, the more strongly acidic the substance.
[A]:
lower