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: John was watching the particle accelerator and notating the reactions of the atoms. He observed that an object with more mass has a thermal energy that is 
 Option1: More 
 Option2: Less 
 Explanation: Therefore, an object with more mass has greater thermal energy than an object with less mass, even if their individual atoms are moving at the same speed.
[EX A]: More

[EX Q]: Question: If you fill a large canister with gas from a smaller canister will the density 
 Option1: increase 
 Option2: decrease 
 Explanation: If we take a certain amount of gas from one container and place it into another, larger container, the gas expandsto fill the larger container. The same mass of gas is now in a larger volume, the gas now has a lower density.
[EX A]: decrease

[EX Q]: Question: Mona is a scientist studying erosion at a university. She is observing a river. If she starts taking erosion measurements at the mouth of the river and moves up to the head of the river, what will she find happens as the slope gets less steep? 
 Option1: erosion decreases 
 Option2: erosion increases 
 Explanation: Water flowing over a steeper slope moves faster and causes more erosion.
[EX A]:
erosion decreases