Answer:
The correct answer is C) during a period of rapid urbanization
Explanation:
As urbanization increases and more and more people move into cities from villages and rural areas, there is a need to quickly develop quality infrastructure.
Apart from simple easy of transportation, a good infrastructure can economically help an area, improve their living standards, bring in business and help to nurture progressive growth.
Other options such as 'when traffic patterns change' or 'During tourist season' are examples of late and poor planning.
