Which of the following best explains the concept of "cultural diffusion"?

The concept of "cultural diffusion" specifically refers to the process through which cultural beliefs, values, practices, and social norms are spread from one group to another. This can occur through various means such as migration, trade, or the diffusion of media and technology. As cultures interact, they may adopt and adapt elements from one another, leading to a sharing of ideas and practices that enrich and diversify both cultures involved.

The other options, while related to aspects of cultural interaction, do not capture the essence of cultural diffusion. The blending of cultural practices might occur as a result of cultural diffusion, but it does not fully encapsulate the idea of spreading beliefs and practices from one group to another. The eradication of cultural differences suggests a more uniform outcome that is contrary to the dynamic and fluid nature of cultural exchange. Lastly, the resistance of cultures to outside influences is a phenomenon that can occur alongside cultural diffusion, but it does not describe the process of diffusion itself.