Question

Which effect BEST completes the diagram?

Answer 1

A. With official support, Christianity began to spread rapidly and flourish throughout the empire.

In fact, Christianity became the main religion of the Eastern Roman Empire after the reign of Constantine.


hope this helps

Answer 2

I researched this topic, and according to wikipedia: "raise the stock of Christianity within the empire and it reaffirmed the importance of religious worship to the welfare of the state..." 

From this piece of information, I think that (A) is the correct answer since it seems like the religion seemed to spread throughout the empire quickly.