The United States is a Democracy.
There are no Kings or Queens in America (although the president and his wife come close). This sounds like a Dominion. It is not what you want.
There are laws in America. Lots of them. But checks and balances still work. So the last one is not true.
Technically the first one is an oligarchy. It is not correct, but it is the closest to the right answer. The first one is close but not correct.
The answer is government by the people. That's what the constitution guaranteed.