Answer:
The correct answer is -
Competition
availability of food
Explanation:
Density-dependent factors can be either a positive or a negative correlation to population size. These factors depend on the size of the particular population. They can increase or decrease or limit depending on the change of the size of the population.
Competition is one of the density-dependent factors that occur when reaches a high density, then there are multiple contenders for a single resource.
Availability of food - availability of food also depends on the size of the population if the population increases the availability of food is decreases or limit.
