Answer:
A. Limits to resources exist for a population
Explanation:
The explanation that fits the growth curve would be that there exist limits to the resources available for the population.
As a result of limited resources, a population is prevented from reaching its biotic potential and confines the population growth model to logistic rather than exponential.
The limited resources keeps the population around the carrying capacity of the environment, that is, the maximum population size an environment can support based on the resources it has.
A newly established population usually experience a short period of exponential growth. As a result of continuous competition for resources, the population becomes limited and begins to oscillate around the carrying capacity of the environment.
The correct option is A.
