I think it's C i'm sorry if i'm wrong.
Answer:
A. Swahilli
Explanation: Swahili developed as a common coastal language as early as the thirteenth century and has been greatly influenced by Arabic. It easily incorporates foreign words (primarily from Arabic, Hindi, Persian, and English) and consequently has been considered the most flexible of all languages in East Africa.
Because it possesses a climate different than the land below, making it seem like an island.