TASK DEFINITION: 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.
PROBLEM: Question: If Milo wants to make his water saltier and begins removing 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.

SOLUTION: decreases

PROBLEM: Question: As you travel through the ozone layer the temperatures become 
 Option1: higher 
 Option2: lower 
 Explanation: The stratosphere contains the ozone layer, the temperatures increase as altitude increases.

SOLUTION: higher

PROBLEM: Question: If you need to turn a screw a few times that requires 
 Option1: less force 
 Option2: more force 
 Explanation: The trade-off when the threads are closer together, is that more turns of the screw or bolt are needed to do the job because the distance over which the input force must be applied is greater.

SOLUTION:
less force