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: 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: Eric adds gas to a 20ml container and Rita adds gas to a 10ml container. Which container holds more gas particles? 
 Option1: Rita 
 Option2: Eric 
 Explanation: In the larger container we will still have the same number of gas particles, but now they are filling a much larger space.
[EX A]: Eric

[EX Q]: Question: Compared to a ripple in a pond caused by a drop of rain, would a wave in the ocean have 
 Option1: more closely spaced particles in its rarefactions? 
 Option2: more distantly spaced particles in its rarefactions 
 Explanation: Places where particles of a medium crowd closer together are called compressions, and places where the particles spread farther apart are called rarefactions. The more energy the wave has, the closer together the particles are in compressions and the farther apart they are in rarefactions.
[EX A]:
more distantly spaced particles in its rarefactions