In South Carolina, where would you find strong Federalist support?

Charleston

Explanation:

Charleston is one of the biggest city in South Carolina. In the past , southern states generally have weak support for federalist support. Federalist wanted to increase the power of central government over the states. Southern states on the other prefers that the central government have least amount of power as possible.

That's being said, some supporters  of federalist still exist in the South. They believed that central government need to have the authority over the states to prevent southern states from revolting.

The federalists supporters In South Carolina use Charleston as a basis for their operation since it possess a number of business institutions that will benefited from federalist's programs

i think the answer's are a) b) and c)