I believe it would be an oxymoron.
Answer:
https://writingcenter.unc.edu/tips-and-tools/fallacies/
I would say that Margaret Fuller would be best described as an important Feminist writer in regards to her crucial contributions at the time
Answer:
Just like word choice, writers should strive to vary their sentence structure to create rhythmic prose and keep their reader interested. Sentences that require a variation often repeat subjects, lengths, or types.