Explanation:

- Diffusion involves the spread of cultural elements, which doesn’t necessarily retain the original culture’s identity.

- Assimilation is when one culture is absorbed into another, often losing its distinct features.

- Acculturation refers to the process of cultural change and adaptation occurring when different cultures come into contact, often retaining some original identity.

- Integration is the process where cultural change is consciously done while retaining its original identity and elements.

- Option: 4- 4 only is correct because integration retains a culture’s identity while incorporating changes.