People of different ethnicity and culture living in the same area.<span />
the answer is D, let me know if its the correct answer :)
I believe the answer is D
If you provided "Source C" I'm sure more people would be able to help.
However, based off of my knowledge of the spread of reformation, I do know that the ideas spread to <span>Scandinavia and then around northern Europe; mainly through the usage of the printing press and increased literacy.
Not sure how much this helps, but im sure it's better than having no answer at all. :)</span>