Urban sprawl occurs when
a. cities spread out into the existing countryside
b. cities extend upward
c. people leave cities to live in rural areas
d. none of the above

The answer is A. Urban sprawl occurs when cities spread out into the existing countryside. Usually it is in the form of housing developments and/or shopping centers.

Among the causes for the fenomenon known as urban sprawl, or urbanization, are the rise in poputalion growth and the lack of urban planning, that have produced cities with traffic problems, less green areas and poor infrastructure. Which is why people tend to search for areas that are more calm and have bigger housing space.

Among the effects of urban sprawl, there is an increase of traffic, due to people living further from their job, they tend to use their vehicles more; and environmental issues such as the displacement of the wildlife that lived in these lands.

where is your diagram?