Step 1: Concept
Homeostasis is the maintenance of a constant internal environment, and the brain has a specific "thermostat" center.
Step 2: Meaning
This region monitors blood temperature and receives sensory input from the skin to initiate cooling or warming responses.
Step 3: Analysis
The cerebellum coordinates movement. The medulla oblongata controls heart rate and breathing. The thalamus acts as a sensory relay station. The hypothalamus contains the thermoregulatory center.
Step 4: Conclusion
By coordinating physiological responses like sweating or shivering, the hypothalamus maintains the body's set-point temperature.
Final Answer: (C)