Which language group first originated in sub-Saharan Africa and then diffused?​

A) ​Swahili
B) ​Bantu
C) ​Arabic
D) ​Slavic

Bantu is a language family that originated in sub-Saharan Africa and has since diffused to other parts of the continent. It is spoken by millions of people in countries such as South Africa, Tanzania, and Kenya. Swahili, on the other hand, is a Bantu language that has been heavily influenced by Arabic and other languages. Arabic is not a language group, but rather a single language with many dialects, and it is believed to have originated in the Arabian Peninsula. Slavic is a language family that is primarily spoken in Central and Eastern Europe, and is not associated with sub-Saharan Africa.