B. Because you don't want to have a sentence that isn't complete in an essay
The prophecy from the witches state that no woman born from man shall harm Macbeth. We learn in the story that Macduff was ultimately ripped out of his mothers womb (through a c-section) this means that he was technically actually never born
Tone is created through word choice, sentence construction/ word order, and by what the viewpoint is focusing on.
In what condition did your friend find you when he visited your house?
It's D. Biography, I believe.
