Answer:
Option: c) urban sprawl.
Step-by-step explanation:
Middle- class suburbs in the late 19th century characterized by the uncontrolled expansion of urban areas. The industrialization resulted in overcrowding in cities and towns. Majority of the rural people moved out of their county side and moved to urban to find a better job opportunity and to start a new life. The moving of the rural population in the urban areas led to the rise of urbanization.