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: 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.
answer:
they will rise


question:
Question: If a product is stretched, elastic force will 
 Option1: increase 
 Option2: decrease 
 Explanation: The elastic force increases the more the material is stretched or compressed.
answer:
increase


question:
Question: Jim is moving continents around on a map using the Mercator projection. What will happen to the size of a continent if he moves it closer to the North Pole? 
 Option1: it will become larger 
 Option2: it will become smaller 
 Explanation: In a Mercator projection, because Greenland is closer to the pole, the continents shape and size are greatly increased.
answer:

it will become larger