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: When you go into a cave, the rocks at shallower levels are _____ than the rocks on the surface. 
 Option1: younger 
 Option2: older 
 Explanation: The main law is the law of superposition. This law states that deeper rock layers are older than layers closer to the surface.

SOLUTION: younger

PROBLEM: Question: Going higher in the mesosphere, we encounter _____ temperatures. 
 Option1: higher 
 Option2: lower 
 Explanation: In the mesosphere, temperature decreases as altitude increases.

SOLUTION: lower

PROBLEM: Question: A sensor on a camera that is larger will have 
 Option1: higher resolution 
 Option2: lower resolution 
 Explanation: The larger the light collecting area, the more light a telescope gathers and the higher resolution (ability to see fine detail) it has.

SOLUTION:
higher resolution