C. Mrs. Lucretia
I Recall Reading A Book About Frederick Douglass. I Believe It Mentioned This.
I dont understand what the question is
A foil is a character that is the opposite of the protagonist, but not necessarily in a bad way. It only means they have opposite qualities--it does not mean that they are the antagonist of the main character. Antithetical character are normally their "enemies"--they are the antithesis. Think antithesis of the main character.