Answer :
The mit'a was A) a system requiring subjects to provide labor to the Inca state.
What is the mit'a?
Mit'a was a requirement by the Inca Empire that her subjects provide mandatory service in the society.
This compulsory service was a kind of taxation imposed by the Inca government in the form of labor instead of money.
Thus, we can conclude that the mit'a refers to Option A and not B) the leader of the Inca nor C) the road network of the Inca Empire.