"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).
Answer:
A synonym for it is B (rampart)
It is a piece of writing usually given as an assignment, where the person who is given this task must write and research a topic and write an educational paper about said topic.
