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: Will decreases the population of his model of the world's population. The amount of water scarcity, if no other variables are changed, will likely go 
 Option1: up 
 Option2: down 
 Explanation: Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.
Example Output: down

Example Input: Question: As Dean was surveying the town, he noted that the more kids that the neighbors had, the population of the town went 
 Option1: down 
 Option2: up 
 Explanation: With exponential growth, the population starts out growing slowly. As population size increases, the growth rate also increases.
Example Output: up

Example Input: Question: Tommy was assigned to work with alkene compounds for his science project. When he took them out he noticed that they were in liquid form before he even worked with them. This means that the alkenes were 
 Option1: small alkenes 
 Option2: large alkenes 
 Explanation: Larger alkenes have lower boiling and melting points, so they are liquids or waxy solids at room temperature.
Example Output:
large alkenes