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: Tanya has a substance with mass 10kg. Logan has a substance with mass 5kg. If both substances are the same size, who has the less dense substance.
Option1: Tanya
Option2: Logan
Explanation: If we have two materials with the same volume, the material with a higher mass will be more dense.

A: Logan
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Q: Question: Mona lives in a city that doesn't use much oil. If the mayor of that city decides to change their policy and the city begins using more oil, what happens to the amount of pollution generated by the city?
Option1: increases
Option2: decreases
Explanation: Greater use of oil and other fossil fuels causes more pollution.

A: increases
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Q: Question: A cold object indicates its particles are going
Option1: fast
Option2: slow
Explanation: When particles move more slowly, temperature is lower and an object feels cooler.

A:
slow
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