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.

[EX Q]: Question: When a number on the pH scale is very low it is said to be 
 Option1: acidic 
 Option2: basic 
 Explanation: The more basic a solution is, the closer its pH value will be to 14.
[EX A]: acidic

[EX Q]: Question: A slow moving stream is capable of carrying _____ particles than a fast moving stream. 
 Option1: larger 
 Option2: smaller 
 Explanation: In erosion, a slower moving stream will only carry smaller particles.
[EX A]: smaller

[EX Q]: Question: In science class, kids learned about how when atoms are larger, the distance between the valence electrons and the nucleus is 
 Option1: bigger 
 Option2: smaller 
 Explanation: In bigger atoms, valence electrons are farther from the nucleus.
[EX A]:
bigger