Because. But come on why waste points instead of asking a question?
The answer to your question is,
To correct the misconception that slaves sing because they are happy
-Mabel <3
Macbeth’s guilt causing him to see Banquo’s ghost. D.
The answer to the question is letter "B. informal". This is the level of diction which is conversational. This includes documents, personal letters, emails, and others that are aimed to converse and entertain. Further, this also sometimes includes "slang" language.