Which model illustrates the stages of urbanisation as countries develop?

The urbanisation pathway is the correct choice because it effectively illustrates the stages of urbanisation that countries experience as they develop economically and socially. This model takes into account factors such as industrialization, migration patterns, and changes in land use over time.

As countries progress through various stages of economic development, they typically experience shifts from predominantly rural societies to more urbanized settings. The urbanisation pathway highlights these transitions, showing how urban areas grow and evolve as populations move from rural to urban environments in search of better opportunities, improved living standards, and access to services.

The other models mentioned do not specifically focus on the overall stages of urbanisation across different contexts. The urban frame model is concerned with the structure of urban areas, central place theory focuses on the distribution of services and cities in relation to their market areas, and the sector model deals with urban land use in specific zones rather than outlining a developmental trajectory of urbanization.