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 the rate of flow in a river were reduced, what would happen to the size of sediment particles being deposited on the riverbed? 
 Option1: smaller particles would be deposited 
 Option2: larger particles would be deposited 
 Explanation: The size of the eroded particles depends on the velocity of the water. Eventually, the water deposits the materials. As water slows, larger particles are deposited. As the water slows even more, smaller particles are deposited.
[EX A]: smaller particles would be deposited

[EX Q]: Question: Jan lives in a great country and she is rich. Compared to another person in a poorer country, Jan will use an amount of energy that is 
 Option1: greater 
 Option2: lesser 
 Explanation: People in the richer nations of the world use far more energy, especially energy from fossil fuels, than people in the poorer nations do.
[EX A]: greater

[EX Q]: Question: Ollie drives a car that doesn't use biofuels. It creates more pollution and therefore, 
 Option1: more carbon dioxide. 
 Option2: less carbon dioxide 
 Explanation: The advantage to biofuels is that they burn more cleanly than fossil fuels. As a result, they create less pollution and less carbon dioxide.
[EX A]:
more carbon dioxide.