The correct answer is A. Ironworking
Explanation:
Bantu speaking people include multiple ethnic groups located mainly in central and southern Africa, all of these groups are believed to be descendants from one group that originated in Central Africa and then derived to multiple ethnic groups which occurred around 2000BC. Additionally, the Bantu speaking people differ from other minor nomadic and hunter-gatherers group as they developed complex metallurgy techniques especially ironworking that help them to create weapons but also objects that make easier daily tasks. Indeed it is believed Bantu people were more developed in terms of technology than any other group.
