Answer:C. Pitted southern planters against New England merchants.
Explanation: At 1787 constitutional convention of the United States of America,the major issue of contention or interest was wether to consider the slaves as part of the population when trying to determine representation in the United States of America Congress.
THE "THREE-FIFTHS COMPROMISE" OF THE CONSTITUTIONAL CONVENTION PROVIDED THAT 60% OF SLAVES IN EACH STATE WOULD COUNT TOWARD CONGRESSIONAL REPRESENTATION,WHICH EVENTUALLY INCREASED THE NUMBER OF SOUTHERN SEATS IN THE CONGRESS.