What does Diffusion of Innovation Theory primarily explain?

Diffusion of Innovation Theory primarily focuses on the process by which new ideas and practices are communicated and spread within social systems. This theory explains the various stages of adoption of innovations, detailing how different categories of adopters (like innovators, early adopters, early majority, late majority, and laggards) play a role in the overall dissemination of an innovation. The theory emphasizes the importance of communication channels, social systems, and the impact of the perceived attributes of innovations on their adoption rate.

In the context of the question, option C captures the essence of this theory by highlighting the mechanisms and factors that facilitate the spread of new ideas. It is particularly relevant in various fields such as healthcare, education, and technology, where understanding how innovations can be effectively introduced and integrated into practice is crucial for success.