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: Eric notices an increase in antibiotic resistance in a certain bacteria. The mutation that causes the resistance has become _____ common 
 Option1: more 
 Option2: less 
 Explanation: Bacteria with a mutation the helps resist antibiotics increase in numbers, so the mutation becomes more common.

SOLUTION: more

PROBLEM: Question: As the plane dropped altitude, the passengers felt _____. 
 Option1: cooler 
 Option2: warmer 
 Explanation: In the troposphere, temperatures decrease as altitude increases.

SOLUTION: warmer

PROBLEM: Question: When we have a lot less greenhouse gases in the air what happens to the temperature? 
 Option1: increases 
 Option2: stays the same 
 Explanation: As greenhouse gases increase, changes will be more extreme.

SOLUTION:
stays the same