The answer is letter C. His tears were a symbolic representation of anger. It was an expression that he incorporated in the poem to portray his wrath towards his foe. That he was toiling hard to keep his anger within himself.
first person narration is when someone is talking with pronouns such as I or we.
in that paragraph, the expression Mounting evidence could be a bit confusing, but it indicates that there's been reaserch about it before, and that it all points in the same direction, the more research proving the same point means the data is convincing. The answer is D.