Answer:
Hierarchical
Explanation:
We have 4 types of difussion
Hierarchical: When the diffusion innovation or concept spreads from a place or person to another in a leveled pattern
Stimulus: When the innovative idea diffuses from its hearth outward
Contagious: When numerous places or people near the point of origin become adopters
Relocation: Involves the actual movement of the original adopters from their point of origin, or hearth, to a new place
So we have that it spreads in the same region, from person to person, so it has to be Hierarchical