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: Jan poured a liquid solution into a bottle and the solution was very dense, so in the bottle it took up 
 Option1: more room 
 Option2: less room 
 Explanation: More dense water takes up less space than less dense water.
[EX A]: less room

[EX Q]: Question: If Milo wants to make his water saltier and begins adding salt to the glass, what happens to the density of the glass of water? 
 Option1: decreases 
 Option2: increases 
 Explanation: If salt is added to a volume of water, there are more molecules in the same volume, so the water is denser.
[EX A]: increases

[EX Q]: Question: The archaeologist was digging and saw that the oldest rocks were in layers that were 
 Option1: shallower 
 Option2: deeper 
 Explanation: The upper rock layers are much younger.
[EX A]:
deeper