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: Milo lives in a small city, but the city has recently become more popular with young people. If more young people begin leaving the city, what happens to the growth rate of the city? 
 Option1: increases 
 Option2: decreases 
 Explanation: In exponential growth as the population size increases, the growth rate also increases.

A: decreases
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Q: Question: If we find something with a low pH value that is likely to be 
 Option1: acidic 
 Option2: basic 
 Explanation: The higher the pH value is, the stronger the base.

A: acidic
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Q: Question: Between a marble and a cannon ball, both travelling at the same speed, the object with the greater momentum would be 
 Option1: the cannon ball 
 Option2: the marble? 
 Explanation: The more mass a moving object has or the faster its moving, the greater its momentum.

A:
the cannon ball
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