Answer:
D: infrastructure that cannot adequately support the population
Step-by-step explanation:
When urbanization is unplanned and rapid that will lead to a poor infrastructure which will be unable to support the population.
Unplanned and rapid urban growth will not have enough infratructure or organizational structures that will lead to poverty and poor water and waste managemnet system that will lead to communicable diseases and will be unable to support the population.
Hence, the correct option is D.