One of the quintisessential features of the Swahili city-states from 1000 to 1500 BC was their urban style. A few families made up the elite, ruling classes, while most people in the cities were less wealthy, working as craftsmen, artisans, clerks, and sailors. People in villages along the coast could also identify as Swahili.
Explanation:
The poet has followed the rhyming scheme abcbdd in all the stanzas except the second one. So the last one on your list.
If there is a selection of answers I would go with
Repetition
Parallelism
maybe some others but I don't know all the poetic devices you have to chose from
The subject is Miss williams