Which is the most appropriate tone for a research paper?

Read the passage below and answer the question. marcus had a reputation for being craven. no one had ever seen him do a single brave thing. using context clues, how would you define the word craven in the passage? intense courageous cowardly thoughtful

Precarious subsistence voracious abysmal wood is to fire as food is to arrowright grinning is to cheerful as teetering is to arrowright conniving is to scheming as terrible is to arrowright mournful is to sad as gluttonous is to arrowright

How does edward covey attempt to break douglass’s spirit?