Final answer:
Among the options given, sheep introduced to Tasmania is the clear demonstration of logistic growth, with population stabilizing around the carrying capacity.
Step-by-step explanation:
The question Which of the following provides a clear demonstration of logistic growth? relates to a concept in population ecology where population growth occurs with limited resources and eventually stabilizes when the carrying capacity of the environment is reached, showing an S-shaped curve. From the options provided, sheep introduced to Tasmania would be an example of logistic growth. In this case, the sheep population increases until it reaches the carrying capacity of the environment, after which it fluctuates around that carrying capacity. This is in contrast to unlimited exponential growth where resources are assumed to be infinite.