Final answer:
The multiple-nuclei model of city structure is most applicable to newer and fast-growing cities, as these cities tend to have multiple centers of activities due to advancements in technology and strong social organization.
Step-by-step explanation:
The multiple-nuclei model of city structure is most applicable to D) Newer, fast-growing cities. This model considers a city as a complex structure with more than one center around which development happens, a phenomenon often noticed in fast-growing, modern cities.
The model was developed to account for the changes in urban structure as cities grew. Unlike traditional cities, which were often centered around a single core, such as a downtown, fast growing cities tend to develop multiple nodes of activity. For example, a city may have separate centers for business, retail, and industry, each of which forms its own nucleus within the city.
The reason for Multiple Nuclei model's applicability to newer, fast-growing cities lies in the advanced technology and strong social organization that these cities have, allowing for them to support a larger and diverse population, as well as multiple areas of growth and activity.
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