Answer: C. Christianity
Step-by-step explanation:
From the beginning, Constantinople, the capital of the Byzantine Empire, was a Christian city. It had been dedicated to God by Constantine, who viewed it as the center of a great Christian empire. Church leaders were consulted about all important events of everyday life and had great influence over the people. Church and government worked closely together in the Byzantine Empire. Christianity was the official religion, which meant that everyone in the empire was supposed to be a Christian. The Byzantines believed the emperor represented Christ on Earth.