The correct answer is coexistence
Acculturation is an anthropological and sociological concept that is related to the fusion of elements belonging to two or more cultures.
It is determined by a dynamic process of social and cultural change that takes place through the contact (direct or indirect) between different social groups.
These groups are influenced by different elements, and thus, they create new structures. As an example, we can mention the fusion between Greek and Roman culture that generated Greco-Roman culture.
Remember that culture is a very broad concept that involves knowledge, values, customs, ways of doing, practices, habits, behaviors and beliefs of a specific people. It is not static and is therefore in a continuous process of change.