After the 16th century, what type of person was labeled barbarian?
a. any person who exhibited wild or rude behavior.
b. a person who babbled excessively.
c. any person who came from a culture that practiced slavery.
d. a person who did not receive a formal education.

After the 16th century, any person who exhibited wild or rude behavior was labeled barbarian. Option A is correct.

A barbarian is a human who is perceived to be either uncivilized or primitive.The term barbarian was coined in ancient Greece, and it initially only referred to people who were from out of town or did not speak Greek.

Barbarianas can also be part of a certain "primitive" cultural group (such as nomads) or social class (such as bandits) both within and outside one's own nation.