A
Explanation:
using her name and she/her instead of and I statements makes it 3rd person, and Because the writer can tell the reader what Harriet is thinking its omniscient, which can mean all knowing.
Answer:
A nickname is a name that only close people can call someone, or they prefer the nickname to be their public name.
Explanation:

I don't recommend using the first person pronoun in an argumentative essay. Unless your instructor suggests that you do so, omit it from the assignment because your writing will read better without it.