Answer:
The answer is C. Writing
Step-by-step explanation:
This is directly from PF reading material. The answer is in the last sentence, notice how it lists everything except writing.
"Arts and Culture of Early Modern Africa
When societies don't leave behind many or any written records, material culture can be a rich source for discovering how people lived. Material culture refers to the objects, buildings, and physical remains people leave behind. By examining the art, architecture, and artifacts from African peoples, archaeologists and historians have learned much about African societies."