In the years leading up to the american revolution, the committees of correspondence were most important because they
a) kept parliament informed as to what colonists were planning.
b) provided a record of the negotiations in the continental congress.
c) show that the group that would become the federalists were already very powerful.
d) were the first attempt to maintain close political cooperation among all colonists.

D)were the first attempt to maintain close political cooperation among all colonists.

Explanation:

The Committees of Correspondence were the means that the American Colonies had to maintain communication before the Revolutionary War. Boston was the first colony to create them, later other colonies followed.

They were very important because the Committees maintained the Colonies in communication with one another and as the relationship with Britain got worse they became more and more important.

they supported black codes so the answer is a or b