Which of the following is TRUE about county government in Florida? A. Counties vary widely in terms of size, population, and functions.
B. Counties serve primarily as judicial districts.
C. Counties get their authority from the Federal Government.
D. Counties must operate under a charter.

County governments serve a larger geographical area than cities and towns, but a smaller area than states. They are created by the state government and typically operate under provisions set out in the state constitution. As such, they are essentially administrative units of the state.

so i believe A. Counties vary widely in terms of size, population, and functions is your answer.