Relocation diffusion involves what key process?

Relocation diffusion is primarily characterized by the physical movement of individuals who adopt a particular idea, innovation, or practice from one location to another. This means that when people migrate from one place to another, they carry their cultural aspects, beliefs, and behaviors with them, leading to the spread of these elements in their new location. This process contrasts with other forms of diffusion like expansion diffusion, where ideas spread without the physical relocation of individuals.

The essence of relocation diffusion lies in the concept that the adoption of an idea is paired with the physical relocation of those who promote or practice it, resulting in the establishment and integration of those ideas in the new environment. This is why the identified correct answer effectively captures the fundamental principle of relocation diffusion.