Final answer:
The Constitutional Convention addressed the issue of slavery through the Three-Fifths Compromise.
Step-by-step explanation:
The Constitutional Convention addressed the issue of slavery for purposes of representation in the House of Representatives through the Three-Fifths Compromise. Under this compromise, three out of every five enslaved people would be counted when determining a state's population. Article 1, Section 2 stipulated this compromise, stating that representatives and direct taxes shall be apportioned among the states according to their respective number, which would include three-fifths of all other persons, referring to enslaved individuals.
This compromise gave extra political power to slave states, although not as much as if the total population, both free and enslaved, had been used. The purpose of the compromise was to balance political power between states with enslaved people and those without. Northerners agreed to the compromise because the Northwest Ordinance of 1787 banned slavery in future states of the Northwest, which was seen as a balancing act.
Therefore, the delegates to the Constitutional Convention resolved the disagreement regarding slavery by adopting the Three-Fifths Compromise, which counted three-fifths of the enslaved population for purposes of representation in the House of Representatives.