What is the primary purpose of the OSI model?

The primary purpose of the OSI model is to provide a framework that enables different networks to communicate seamlessly. This model standardizes the functions of a networking system into seven layers, each serving a specific purpose. By breaking down the communication process into these distinct layers, the OSI model allows various networking protocols and technologies to work together, regardless of their underlying architectures. This interoperability is crucial because it facilitates communication between devices from different manufacturers and across diverse network types.

While the other options may touch upon aspects of the networking field or the historical context of networking models, they do not encapsulate the fundamental goal of the OSI model as effectively as the correct choice does. For instance, the intent of establishing a layered model larger than other models or focusing on single layer changes would not highlight the core function of enabling interconnectivity among diverse networks, which is the essence of what the OSI model achieves.