Which of the following was one of the two issues involving slavery in the constitution?
a.) whether three-fifths of slaves should be free
b.) how slaves would be counted for representation
c.) how to return slaves to africa
d.) whether to allow men who were former slaves to vote

One of the two issues involving slavery in the Constitution was:

How slaves would be counted for representation.

Southern states needed different states to come back at liberty slaves. The Articles of Confederation had not bonded this. However once Congress opted the Northwest Ordinance, it a clause ensuring that slaves who at liberty to the Northwest Territories would come to their homeowners. The representatives placed the same escaped slave clause within the Constitution. This was a part of a take care of geographic area states.