Explanation
The part of the brain that is responsible for the maintenance of equilibrium of the body and coordination of muscles is the cerebellum. The cerebellum is a structure located at the base of the brain, below the cerebrum, and is divided into two hemispheres.
The cerebellum is responsible for controlling movement, balance, and posture by receiving information from the sensory systems of the body, such as the inner ear and the eyes, and integrating this information with motor signals from the brain.
The medulla oblongata is responsible for controlling vital functions such as breathing and heart rate. The cerebrum is responsible for conscious thought and voluntary actions, while the hypothalamus is responsible for regulating many of the body's internal processes, such as body temperature and hormone release.
Therefore, the answer is B: Cerebellum.
