Option C is correct, as 'writing' is only really a description of the
physical act of creating a document. The other terms outline the nature
of the research that has to happen in order to produce the intellectual
information that forms a historical explanation, so these are all
actually phases in the creation of a historical explanation.
This proclamation legalized Christianity and allowed for freedom of worship throughout the empire. For a time, Constantine stood by as others ruled the Eastern Roman Empire.
