Which of the following most directly describes the growth of cities?
a.) segregation
b.) urbanization
c.) industrialization
d.) commercialization

B. urbanization 

Hope I helped! ( Smiles )

In my honest opinion, I would go with industrialization. It's my best guess. Or Urbanization. It may be because industries and population are crucial to the development of cities.

Hope it helps! It's morning so sorry for a short explanation.

The tried to make the government smaller by making the government smaller