Constantinos Apostolou Doxiadis, a renowned Greek architect and urban planner, coined the term Ekistics to describe the science of human settlements. Ekistics focuses on the study of human habitation, the design and planning of cities, and the relationship between people and their environment. It is a comprehensive discipline that combines aspects of architecture, urban planning, sociology, and geography, with the aim of improving the quality of life in urban areas.
The other options, while related to urban studies, do not specifically capture Doxiadis' philosophy and approach to human settlements:
Conclusion: The correct term that describes the science of human settlements, as coined by Doxiadis, is Ekistics.
Option 3: Ekistics