I believe the correct answer is B. Would mind giving me brainliest answer :)
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.
B bored. they have nothing to do.
Answer:
To reduce risk of physical contaminants
Explanation:
