It’s a subcordanating conjunction
"Brennan on the Moor" is structured in this way, so that the longer stanzas can follow the tale of Brennan and give more details to the story. The shorter stanzas act as a chorus, which is usually used to come back to the main idea of a song or poem (in this case, the idea that Brennan is the hero of the poem).
I would say either D or B but it depends on whether the Romantic ideals are personal to the character or if they’re a theme throughout the story :)
Answer:
1. more than 14 days of headaches over three months in a row.
B is the correct answer. The title is unnecessary in the introductory paragraph, the essay's title should be at the the top of the whole text.