Which of these is an example of cultural diffusion?

Question

A.
As Nubia and Egypt traded, they maintained entirely separate cultures.
B.
As Nubia and Egypt traded, Nubians passed diseases to the Egyptians.
C.
As Nubia and Egypt traded, Nubians began to use Egyptian writing.
D.
As Nubia and Egypt traded, they built a military together to defend their lands.

Answer 1

C. As Nubia and Egypt traded, Nubians began to use Egyptian writing.

This option illustrates cultural diffusion, as it shows the adoption of one culture's practices (Egyptian writing) by another culture (Nubians) as a result of their interaction and trade.