The Federalist Papers served the purpose of:

Asupporting the ratification of the constitution by the state of Virginia
Copposing the ratification of the constitution by the state of Virginia
Bsupporting the ratification of the constitution by the state of New York
Dopposing the ratification of the constitution by the state of New York

Verified Answer :

Generally speaking, the Federalist Papers served the purpose of "a. supporting the ratification of the constitution by the state of Virginia", since Virginia was one of the most "important" states at the time.