Final answer:
Thermoregulation is the process that maintains homeostasis with feedback mechanisms, regulating body temperature to adapt to environmental changes.
Step-by-step explanation:
The process directed toward maintaining homeostasis through a feedback mechanism of input from members and from the external environment is C) Thermoregulation. Thermoregulation is a vital homeostatic process that involves maintaining a stable internal body temperature in the face of varying environmental temperatures. This process utilizes feedback mechanisms that can either be negative or positive. Negative feedback mechanisms work to reduce the output or activity of any organ or system back to its normal range of functioning. A common example of a negative feedback mechanism is the regulation of body temperature, where the body responds to changes in temperature by initiating processes that promote heat loss or retain heat to maintain a steady internal environment.