The event that led yo Dante's ecile from his hometown was that Dante publicly spoke out against the pope's desire to rule the city-states. Option B is correct.
Prior to his exile, Dante served as one of the six priors governing Florence, the city where he lived.
Dante’s political activities, such as the banishing of several rivals, resulted in his own banishment, and he wrote his masterpiece, The Divine Comedy, as a virtual wanderer, looking for protection for his family in town after town.
Dante died of malaria in Ravenna in 1321.