Answer and Explanation:
Since the author uses I and uses first person - type language, and sites his sources in the passage, the answer would be D.
D. First person Reliable
This is because he uses I, we, me, etc. in his passage, and he sites sources and where he gets his evidence from, making him reliable.
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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.
In an essay written in a formal style, the kind of tone that the writing should have is: Objective.
An objective tone is a tone where the writer states the facts of a matter. He takes no sides but simply states matters as they are. When writing a formal essay, it important to be objective.
This will require that the facts of the matter are presented and backed by evidence. So, option C is right.
Learn more about formal essays here:
brainly.com/question/3269510
It is a fragment because it doesn't make sense on its en. Its a subordinate clause.