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: As the pressure in the atmosphere rises, the air temperature gets 
 Option1: warmer 
 Option2: cooler or 
 Explanation: Increasing air temperature decreases atmospheric pressure.

SOLUTION: cooler or

PROBLEM: Question: If the people in Mary's country start to create less greenhouse gases, what will happen to the possibility that changes may occur? 
 Option1: increase 
 Option2: decrease 
 Explanation: As greenhouse gases increase, changes will be more extreme.

SOLUTION: decrease

PROBLEM: Question: Darrel puts two bowling balls together, then puts two tennis balls together. The tennis balls have friction that is 
 Option1: greater 
 Option2: lesser 
 Explanation: Heavier objects press together with greater force, and this causes greater friction between them.

SOLUTION:
lesser