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: 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.
[EX A]: decreases

[EX Q]: 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.
[EX A]: down

[EX Q]: Question: Two batteries are sitting on a table, one has energy being passed quickly around, the other has energy passed slowly around. The battery with energy being passed slowly has particles of matter that are 
 Option1: further apart 
 Option2: closer together 
 Explanation: When particles of matter are closer together, they can more quickly pass the energy of vibrations to nearby particles.
[EX A]:
further apart