The Efik Kingdom had a highly developed system of writing known as
- Hieroglyphics
- Cuneiform
- Ajami
-
Nsibidi
The correct answer is: D
Explanation
The Efik Kingdom had a highly developed system of writing known as Nsibidi. Nsibidi is a system of symbols indigenous to what is now southeastern Nigeria that is apparently an ideographic script, though there have been suggestions that it includes logographic elements.