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: If Mona is making lemonade and she decreases the acidity of it by adding more lemons, what happens to its closeness to pH 0? 
 Option1: increases 
 Option2: decreases 
 Explanation: The more acidic a solution is, the closer its pH value will be to 0
[EX A]: decreases

[EX Q]: Question: What will happen to the levels of pollution on Earth if the population increases? 
 Option1: they will rise 
 Option2: they will fall 
 Explanation: For example, more people on the Earth means more people contributing to global warming and pollution.
[EX A]: they will rise

[EX Q]: Question: A small calf, compared to an adult, will have fewer atoms and therefore, the thermal energy of the larger cow is 
 Option1: lesser 
 Option2: greater 
 Explanation: An object with more mass has greater thermal energy than an object with less mass because it has more atoms.
[EX A]:
lesser