The correct answer is D) Urban form.
The planners have determined urbanity's urban form.
Engineers and planners have to design urban characteristics when they are planning the construction of an area. That us what we understand as an urban form. We are referring to the size of the area, the shape, and the density. The more specific the better. New urbanization projects are thought for the future and are well planned to offer facilities and amenities that make these constructions very attractive and sustainable.