1. There is more than one Maricopa County in the U.S. I'd suggest adding Arizona, though that obviously makes it a less difficult question.
2. The highest level of security clearance in the U.S. is definitely not 'Top Secret'. Unfortunately, the names of the highest-level clearances are themselves secrets, so there is no way of knowing what the 'top' clearance is called. (For that matter, there probably isn't a single 'top' clearance; each agency probably has their own).
As a non American I find being a big fan of the Simpsons , family guy and South park gets me at least 3 or 4 answers to these quizzes . I am getting around 16 + correct. The beast from UK quiz the Chase says that he learns so much US trivia from the Simpsons .
Pinverarity: There are officially three levels of US security: confidential, secret, and top secret. You are correct that top secret can be further defined, but top secret is correct as the question is written.
2. The highest level of security clearance in the U.S. is definitely not 'Top Secret'. Unfortunately, the names of the highest-level clearances are themselves secrets, so there is no way of knowing what the 'top' clearance is called. (For that matter, there probably isn't a single 'top' clearance; each agency probably has their own).
Other commenters have said the fact that it's in Arizona should also be specified, but I was personally able to deduce that. (: