Which of the Following Statements Best Describes Cultural Diffusion

Which of the following statements best describes cultural diffusion?

A) A culture learns or adopts a new idea or practice from another culture or cultures.
B) A culture keeps its own cultural ideas from other cultures.
C) A culture overcomes a threat to its own by strengthening its own cultural image.
D) A culture tries to suppress elements of its own culture in favour of those from another culture.