Answer:
Correct answer is C. In the Byzantine Empire, the patriarch deferred to political rulers, while in western Europe, the pope attempted to control political rulers.
Step-by-step explanation:
The reason why C is the correct is because while Popes tried to impose their political authority on rulers, on the other side Patriarch was in good relations with Emperors, and tried to strengthen his authority.
All other answers are more related to role religion in church affairs, not in political life.