Choose the answer that lists three barbarian tribes that threatened the roman empire in the fourth and fifth centuries a. d. a. visigoths, parthians, greeks b. burgundians, egyptians, franks c. iberians, ostrogoths, visigoths d. vandals, ostrogoths, huns

The question ask to choose among the following choices that states the list of three barbarian tribes that threatened the Roman Empire in the fourth and the fifth century A.D. and based on my research, I would say that the answer among them is in letter D. Vandals, Ostrogoths, Huns. I hope this would help

(d) it was complex and capable of highly organized efforts.