Which set of factors best explains suburbanization in post-industrial cities?

• A. Urban core redevelopment and high-density zoning only.
• B. Auto ownership, highway expansion, land markets, middle-class preferences for single-family homes, white flight, and safety.
• C. Population decline and reduced mobility.
• D. Government restrictions preventing new housing.

Answer: (B)

Suburbanization in post-industrial cities is best understood as the result of multiple interacting forces that made living outside the urban core both feasible and attractive. Widespread auto ownership and the expansion of highways dramatically widened the geographic reach of the city, making daily commuting from suburbs practical. The way land is priced and zoned often favors low-density, single-family neighborhoods, which aligns with middle-class preferences for space, privacy, and perceived better schools. Demographic shifts, including white residents moving to suburbs (white flight) and concerns about safety, further propelled households away from the urban core. Together, these dynamics explain why growth moved to the suburbs as cities industrialized and then declined.

The other options don’t fit as well because they emphasize central-city changes, decline in mobility, or barriers to housing that would either slow or contradict suburban growth rather than explain it.