Which statement describes contagious diffusion?

Which statement describes contagious diffusion?

• A. Spreads through direct contact among individuals.
• B. Requires relocation of people.
• C. Follows urban hierarchies.
• D. Is blocked by intervening obstacles.

Answer: (A)

Contagious diffusion is the spread of a phenomenon through direct contact among individuals, spreading from person to person as people interact. This mechanism explains why diseases, rumors, or fashion trends can spread quickly in nearby areas without anyone having to move away from their home location. It relies on proximity and interaction rather than on people relocating or on a pattern that climbs through a hierarchy of cities. While barriers or distance can slow it, the defining feature is transmission through direct contact.

Contagious diffusion is the spread of a phenomenon through direct contact among individuals, spreading from person to person as people interact. This mechanism explains why diseases, rumors, or fashion trends can spread quickly in nearby areas without anyone having to move away from their home location. It relies on proximity and interaction rather than on people relocating or on a pattern that climbs through a hierarchy of cities. While barriers or distance can slow it, the defining feature is transmission through direct contact.