The answer must be C because that's what the paragraph mostly talks about
A - Not a knocker but Marley's face
This shows that the knocker transformed to the supernatural by becoming not what it was - but the face of his dead co-worker.
which aspects of the topic to discuss
Huh... this seems to be an opinion question.
No matter, ill try.
It depends on the figure you look at. Partns would be B. governments? Could be all of them. I see how you got confused. Unles this is an opinion question, you may have to guess.