Answer: D. Rome
A isn’t the answer because Constantinople was the capital of the Byzantine Empire
B. Isn’t the answer because Athens was a significant city in the Byzantine Empires height
c. Antioch: Antioch was an important city within the Byzantine Empire during its height. It served as a major administrative and cultural center in the eastern part of the empire. While it faced challenges, including temporary occupations by outside forces, it remained part of the Byzantine territories for much of the empire's history.
So, the correct answer remains d. Rome, which was not part of the Byzantine Empire during its height, as it had fallen to various invaders and was no longer under Byzantine control.