Which of the following is involved in sleeping and waking?

Explanation

C is correct, as along with other functions like regulating body temperature and appetite, the hypothalamus is also responsible for regulating the sleep-wake cycle. The thalamus is a relay station for sensory information, such as touch, taste, smell, sight, and hearing. It sends this information to the cerebrum, which is the largest part of the brain and is responsible for processing information and making decisions. The brain stem is the lowest part of the brain and is responsible for many vital functions, such as breathing, heart rate, and blood pressure. It also controls reflexes, such as the knee-jerk reflex. The cerebellum is responsible for balance, coordination, and movement. It also helps to regulate emotions.