Which type of diffusion occurs when an idea spreads throughout the population without the actual physical movement of people? A. Economic diffusion
B. Hierarchical diffusion
C. Contagious diffusion
D. Stimulus diffusion
E. Relocation diffusion

This if for AP Human Geography, I am doing the Module 3 exam and I do not know most of the questions, please help

C. Contagious diffusion

Explanation:

In human geography , diffusions refers to the spread of cultural elements from one society to another.

Contagious diffusion occurs when an idea or knowledge is taught by one members of another society. When that member come back to their home origin, that person will spread the idea/knowledge to another person. After that, That other person will tell another person and chain will continue. Eventually, the idea will be spread in the new society like a contagious disease.

This is how contagious diffusions manage to spread ideas without actual movement of the people who originally  owned the ideas

i believe it d) heterogeneous

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