Which group of people live primarily on Africa s eastern coast, are of mixed Arab-African ancestry, and usually practice Islam? A. Afrikaners B. Ashanti C. Bantu D. Swahili

I believe the answer is: Swahili
in the past, this region was colonized by the French Empire, which explain why french language is pretty common to be spotted here.
It's predicted that the Swahili had a sum of 650,000 muslim population as its members.