"Sorrow knocked at my door, but I was afraid" is an example of <em>D. personification.</em>
Personification is a literary device in which animals, objects or ideas are given human attributes. In this case, sorrow is given the ability to knock at someone's door, but as we know it is only a figure of speech because sorrow cannot knock at the door.
We all have them and some of us have the same difference
This answer mostly depends on the citation style you are using and is required of you. Out of all the possible answer provided the correct answer here would be A. (Slurry 110). This according to MLA style of citation would be a correct way to cite the author for the in text citation.
