The zone of transition in the concentric zone model is the area immediately on the outskirts of the downtown area where Park and Burgess stated that the most physical deterioration could be seen and where the social problems of the city were most abundant.
Option: A
Explanation:
In concentric zone theory of Perks and Burgess CBD zone is the center of the city where many business are located and the forces of urbanization, immigration, and technological changes have a strong effect. Multi family housing zone is characterized by a huge population pressure in the form of houses, apartments and duplexes.
Single family housing zone is characterized by the least density and less affected area due to social change which impacting the central business district. In zone 4 there is an abundance of single-family housing.