Answer:
A. There is less money available to provide services for people
remaining in cities.
Explanation:
Suburbanization refers to the population shift that occurred when people moved from the urban area to a more rural area. Typically, this happened when those people already earned enough savings and decided to pursue a more quite life.
When this happen, those people will brought a long the capital that they can do to purchase goods /services along with them. This reduce the amount of money available in urban area. As a result, there will be less businesses that can afford to continue their operation.