As popes tried to increase their power, aside from bishops they also came into conflict with
a. kings
b. nobles
c. invaders
d. leaders of other religions

As popes tried to increase their power, aside from bishops they also came into conflict with kings. Option A is correct.

Papal supremacy is understood as the doctrine of the Roman Catholic Church that the Pope, due to his office as Vicar of Christ and as the visible foundation and source of unity, and as pastor of the whole Christian Church, possesses full, supreme, as well as universal power over the whole Church, a power which he can always exercise unhindered."The Pope enjoys, by divine institution, supreme, full, immediate, and universal power in the care of souls."

can someone just answer this