Hint for process of elimination: Whenever an SAT gives a question that is realistic, it attempts to make sure that the solution is realistic. Therefore, if you happen to know anything about New York City, use that.
Also, notice that the ratio of the population of NYC to the population of the rest of New York is . That means that a bit less than half of all New Yorkers live in New York City. Therefore, you should expect the answer to be a little under . That leaves one or maybe two choices.
Read on for a full solution.