It's A as to the avoiding double negation which is not possible in English.
I would say that the sentence which uses a vocabulary word wrong is C) The melancholy scene brought a chill cadence to the back of my neck.
Cadence is a rhythm, or a sequence of notes.
What your generation is about is Trump what you need help with is Trump
jk lol sorry but I need to do that. if you are, a Trump supporter I am sorry.