This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Acculturation is defined as – 
Select and explain. 
A. Loss of culture sense, B. Isolation of two cultures, C. Fading away of culture, D. Mixing of two cultures when coming in contact
D: Mixing of two cultures when coming in contact
Answer: D: Mixing of two cultures when coming in contact 
Explanation: Acculturation 

Acculturation means "Culture contact", when there is contact between two peoples with different types of culture. There is diffusion of culture in both ways.
Various ways of culture contact are :
Trade and commerce
Industrialization
Propagation of religion
Education
Conquest