Final answer:
The internal state of the body is best described as a dynamic equilibrium, where conditions fluctuate around a set average point. Homeostasis is the process by which constant adjustments to changes in the body occur to ensure that body functions remain within a certain range.
Step-by-step explanation:
The internal state of the body is best described as a dynamic equilibrium, where there is a set average point and conditions fluctuate around that point. Homeostasis is the process by which constant adjustments to changes in the body occur, and equilibrium is maintained by ensuring that body functions remain within a certain range. Even an apparently inactive animal is maintaining this homeostatic equilibrium.