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: 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: What would happen to the speed of Earth's orbit if our planet were to move closer to the Sun? 
 Option1: increased speed 
 Option2: decreased speed 
 Explanation: The Earth travels faster in its elliptical orbit when it is closer to the Sun than when it is farther away.

SOLUTION: increased speed

PROBLEM: Question: Ron went to the gym and lifted weights for the first time. If he keeps going consistently, his muscles will likely 
 Option1: grow 
 Option2: shrink 
 Explanation: Anaerobic exercises cause muscles to get bigger and stronger.

SOLUTION:
grow