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: Noah compares the density of the water in a pond during a hot July day and a cold winter morning. The water on the July day is 
 Option1: more dense 
 Option2: less dense. 
 Explanation: Lower temperature and higher salinity yield the densest water.
[EX A]: less dense.

[EX Q]: Question: The air gets thinner when it is 
 Option1: hot 
 Option2: cold 
 Explanation: Increasing air temperature decreases atmospheric pressure.
[EX A]: hot

[EX Q]: Question: Sasha exercises her muscles with weights daily, while Tanya does not exercise ever. Who likely has stronger muscles? 
 Option1: Sasha 
 Option2: Tanya 
 Explanation: Aerobic exercise increases the size and strength of muscles in the heart and helps all your muscles develop greater endurance.
[EX A]:
Sasha