instruction:
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:
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.
answer:
increases


question:
Question: Michel watched the slow waves hit shore with power. The waves were _____. 
 Option1: big 
 Option2: small 
 Explanation: The size of an ocean wave depends on how fast, over how great a distance, and how long the wind blows. The greater each of these factors is, the bigger a wave will be.
answer:
small


question:
Question: What will happen to the acidity of the ocean if more greenhouse gas gets produced? 
 Option1: it will increase 
 Option2: it will decrease 
 Explanation: An increase in greenhouse gases will increase the changes that are already being seen including in ocean acidity.
answer:

it will increase