Which statement reflects expansion diffusion?

Which statement reflects expansion diffusion?

• A. Diffusion that spread but weakens at origin
• B. Diffusion that remains strong in the origin while spreading to new areas
• C. Diffusion that only occurs via media
• D. Diffusion limited to urban centers

Answer: (B)

Expansion diffusion describes a process where a cultural trait, idea, or phenomenon spreads outward from a central source while that source remains strong or even grows. The statement that diffusion remains strong in the origin while spreading to new areas captures this pattern, because the source stays influential and continues to propagate the idea as it reaches additional places. For example, a city’s culinary trend may spread to surrounding towns, yet the city remains a major hub of that trend. Why the other ideas don’t fit: if the origin weakens as the trait spreads, that’s diffusion with a diminishing source rather than expansion diffusion. Relying on media describes a mechanism, not the pattern of diffusion itself, which can involve various means. And diffusion that stays only in urban centers doesn’t reflect outward spread from a source, since it remains confined rather than expanding.

Expansion diffusion describes a process where a cultural trait, idea, or phenomenon spreads outward from a central source while that source remains strong or even grows. The statement that diffusion remains strong in the origin while spreading to new areas captures this pattern, because the source stays influential and continues to propagate the idea as it reaches additional places. For example, a city’s culinary trend may spread to surrounding towns, yet the city remains a major hub of that trend.

Why the other ideas don’t fit: if the origin weakens as the trait spreads, that’s diffusion with a diminishing source rather than expansion diffusion. Relying on media describes a mechanism, not the pattern of diffusion itself, which can involve various means. And diffusion that stays only in urban centers doesn’t reflect outward spread from a source, since it remains confined rather than expanding.