Answer:
C
Explanation:
What are the parts and functions of the brain stem?
To sum up, the brain stem is the lowest anatomical region of the brain. The brain stem is divided into three major parts; the midbrain, the pons, and the medulla. The brain stem controls the bulk of autonomic physiological functions, including respiration, heartbeat, reflexes, digestion, and sleep.
resource: sciencetrends.com