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.

[Q]: Question: After the fire of a pile of tires at the landfill was put out, the reduction of smoke in the air made the air quality 
 Option1: better? 
 Option2: worse 
 Explanation: More pollutants mean poorer air quality.
[A]: better?


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


[Q]: Question: If something has a pH value of 10 it would be 
 Option1: acidic 
 Option2: basic 
 Explanation: The lower the pH value is, the greater is the concentration of hydrogen ions and the stronger the acid.
[A]:
basic