Correct Option: A

Proxemics : The branch of knowledge that deals with the amount of space that people feel it necessary to set between themselves and others. The 4 types of Proxemics are : Intimate, Personal, Social and Public. The concept was given by Edward T Hall.
Serial Vision : A prominent concept is that of ‘serial vision’, elaborated by Gordon Cullen. Serial Vision is the sequential and unfolding nature of urban experience (foreground/middle ground/background), with its corners, divisions/ modules, protrusions, and recesses/setbacks etc creating aspects of interest and surprise.
Urban Imageability : Kevin Lynch concerned himself with how we locate ourselves within the city, how we find our way around. He suggested that to know where we are within the city, we have to build up a workable image of each part. So, studying the legibility and imageability are essential required issues in the urban environment. K. Lynch defined the Legibility of the cityscape as the ease with which its parts can be recognized and organized into a coherent pattern. Kevin defined imageability as the quality of a physical object which gives an observer a strong vivid image. He put the elements as follows : Paths, Edges, Districts, Landmarks and Nodes.
Defensible Space : As defined by Oscar Newman, a defensible space is a “residential environment whose physical characteristics-building layout and site plan-function to allow inhabitants themselves to become key agents in ensuring their security.