____________ model is based on the basic assumption of urban ecology.

Correct option is B

The Concentric zone model, developed by sociologist Ernest Burgess, is based on the principles of urban ecology. It assumes that urban areas expand outward from a central point in a series of rings or zones, with each zone representing different social and economic functions. This model emphasizes the natural growth and division of cities based on human and environmental interactions.
Information Booster:
· Urban Ecology is the study of the relationship between urban areas and the environment, emphasizing how social and economic factors shape urban development.
· The Concentric Zone Model reflects the idea that cities grow outward from a central business district (CBD) in zones of residential and industrial use, showing natural expansion and change.
Additional Knowledge:
Gravity: Incorrect. The gravity model relates to interactions between two locations, particularly in migration and trade, based on distance and size, but it is not based on urban ecology.
Multiple-nuclei: Incorrect. The Multiple-nuclei model assumes that cities develop around several centers or nuclei rather than expanding from a single central point, and it is less focused on the ecological framework.
The City and the Grassroots: Incorrect. This model refers to a book by Manuel Castells discussing social movements and urban change, not a model of urban ecology.