Answer:
C The Mandate of Heaven justified the emperor's dynastic rule while Roman emperors' claims to a divine connection simply placed them at the head of Roman religion.
Explanation:
The Mandate of Heaven was the main factor that gave Chinese emperor legitimacy to their rule, while for Roman Emperors, divine connection was simply the aspect that put them as heads of the Roman Religion, but their legitimacy as rulers came from their family relations: being the son or close-family of the former emperor.