Swahili is to East Africa as Arabic.
Option D
Step-by-step explanation:
Swahili is a language which is getting promoted formerly and is already set to be taught in schools as an optional language. It is lingua franca basically a language that is spoken between people who do not know each other’s common language.
Swahili is language that originated due to Arab migrants to Africa during 10 or 11 century and their intermarriages with Bantu which led to the development of this lingua franca. It is getting highly promoted due to the number of people that speak the language though south already has 11 official languages Swahili is also a very prominent language and national language of various countries in Africa.