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.

Question: If Mona is adding chemicals to her swimming pool and she lowers the pH value of the water, what happens to the acidity of the water in the pool? 
 Option1: increase 
 Option2: decrease 
 Explanation: The lower the pH value is, the greater is the concentration of hydrogen ions and the stronger the acid.
decrease

Question: If Milo is using an electromagnet to lift a car and he wants to decrease the strength of it, what should he do to the current? 
 Option1: decrease it 
 Option2: increase it 
 Explanation: If the current passing through the circuit breaker increases, the electromagnet becomes stronger.
decrease it

Question: Harry has a pet walrus. Jim has a pet parrot. Whose pet has a heavier exoskeleton? 
 Option1: Jim 
 Option2: Harry 
 Explanation: The larger the animal, the heavier the exoskeleton, making movement more difficult.

Harry