Answer:
Essentially, Douglass uses the Fourth of July, when Americans celebrate their independence and their freedoms, to illustrate what he says is the "immeasurable distance" between enslaved people and the rest of Americans. He juxtaposes the ideals of America, celebrated on the Fourth, with the reality of slavery. He must have felt relieved and glorious about it.
"The Tell-Tale Heart" by Edgar Allen Poe is a brilliant story with the theme of "even if you don't tell anyone when you commit a crime, your guilty mind will tear you apart". Near the end of the story, the narrator begins hearing the sound of the dead man's heart beating. This causes the narrator to go crazy enough to confess to the murder to the cops. The narration is very interesting. The story begins with the narrator claiming that he is not crazy. This immediately causes the readers to feel unsettled. Over the course of the story, as the narrator accounts his completely unjustified hatred for the old man with the strange eye, the readers come to realize that the narrator is crazy. <span />
To my mind, the answer ( B ) is the inappropriate sentence. In a formal writing informal tone must be avoided as well as colloquial expressions.