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.

[EX Q]: Question: Sue measured water to be a pH of 7, and she measured bleach at a pH of 11. Which substance is more basic? 
 Option1: water 
 Option2: bleach 
 Explanation: For bases we can state the folllowing: The higher the pH of a substance, the more basic it is.
[EX A]: bleach

[EX Q]: Question: If John heats a gas in his bunsen burner, what would happen to the gas particles? 
 Option1: they would move faster 
 Option2: they would move slower 
 Explanation: If the gas is heated, the particles will move faster as they gain more energy.
[EX A]: they would move faster

[EX Q]: Question: If air cools, it becomes _____ dense. 
 Option1: less 
 Option2: more 
 Explanation: Warm air is less dense than cool air, so it rises higher in the troposphere.
[EX A]:
more