Which of the following reasons best explains the trends in the graph? A. People moved away from cities due to overcrowding and disease.

B. People moved to port cities to protect against naval blockades.

C. People moved to cities looking for economic opportunities.

D. People moved away from cities due to threats from Natives.

Which of these is not a criticism of the concentric zone model? it does not accurately describe cities after the rise of suburban development. it only applies to cities that grew after the development of the automobile. it assumes that inner-city areas will always be repurposed instead of abandoned. it places too much importance on the traditional central business district.