Which design concept was developed by Le Corbusier?

La Ville Radieuse, or "The Radiant City," is a design concept developed by Le Corbusier in the 1930s. This vision focused on creating urban environments that promoted health, order, and functionality, embodying his principles of modernist architecture. Le Corbusier proposed a structured layout characterized by high-rise residential buildings set amidst green spaces, with ample public parks and efficient transportation networks.

The idea was to separate different functions within the city—residential, commercial, and recreational—thus reducing urban chaos and improving the quality of life for inhabitants. This concept was revolutionary for its time, emphasizing light, space, and the importance of aesthetics in urban planning. La Ville Radieuse influenced many urban planning movements and continues to be a point of reference in discussions about modernist urbanism today.

The other choices represent different concepts and movements that were not specifically formulated by Le Corbusier, showcasing various approaches to urban design and planning.