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.

Example Input: Question: A solution with a pH value of 14 is _____ considered to be basic. 
 Option1: definitely 
 Option2: not 
 Explanation: The more basic a solution is, the closer its pH value will be to 14.
Example Output: definitely

Example Input: Question: A family that is enormous, compared to a family that is very small, will have allele differences that are 
 Option1: smaller 
 Option2: greater 
 Explanation: The smaller a population is, the more allele frequencies may drift.
Example Output: greater

Example Input: Question: Years from now, solar power will be _____ than it is today. 
 Option1: more expensive 
 Option2: less expensive 
 Explanation: Solar power is expensive, but as demand increases technology improves and costs decrease.
Example Output:
less expensive