The answer is all of the above
religion changed because of if you're a member of indulgence were sold in catholic churches luther and calvin were against it so they set up their own practices .An our lives our similar due to the negative affects that were applied
I believe there are lots of reasons why the Roman Empire declined but the 3 most important ones are, Government corruption and political instability, Invasions by Barbarian tribes, and The rise of the Eastern Empire, but the one I think is the most important is the first one reason.
I would say D. sorry if not.
