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: Jeff found some very dense water. He knows it is dense because it takes up _____ space than less dense water. 
 Option1: more 
 Option2: less 
 Explanation: More dense water takes up less space than less dense water.
Example Output: less

Example Input: Question: Mel stops after running down the street for exercise. As Mel's heart rate decreases, Mel's blood flow 
 Option1: decreases 
 Option2: increases 
 Explanation: Warming up exercises increases the blood flow to the muscles and increases the heart rate.
Example Output: decreases

Example Input: Question: Will has a simulation with exponential growth. As the population in his model increases, the growth rate also 
 Option1: increases 
 Option2: decreases 
 Explanation: With exponential growth, the population starts out growing slowly. As population size increases, the growth rate also increases.
Example Output:
increases