Question

Which describes a city-state?  A.a region of farmers who organize the local trade center  B.an urban center with a government and defensive fortifications  C.a city whose government answers to a state or provincial government  D.an independent city with political control over the surrounding area
I think it's D

Answer 1

D would be correct, yep.

City-states would be independent, but their power would extend very little outside of the city-states borders.