Answer:
D. Carrying capacity determines the maximum population size.
Step-by-step explanation:
Carrying capacity is number of individual an environment can sustain without depleting, exhausting the available resources.
The carrying capacity of a given area is the population an area can sustain with the available resources such as food,shelter,natural resources,water without exhausting the resources for continued use. For animals it is the amount of grass an animal can graze on without compete depletion. When a population is beyond the carrying capacity there is competition and depletion of available resources. Emigration can occur when the population rises beyond the carrying capacity. Increase birthrate and reduction in death rate increases population in a given environment.