Which part of the brain contains the midbrain, medulla, and pons?

The part of the brain that contains the midbrain, medulla, and pons is the brainstem. The brainstem serves as a crucial relay station that connects the brain to the spinal cord and is involved in regulating many basic life functions, such as breathing, heart rate, and blood pressure.

The midbrain is responsible for functions such as vision, hearing, and motor control. The pons acts as a bridge between different parts of the nervous system and facilitates communication between the cerebellum and the cerebrum, while the medulla is vital for autonomic functions like respiration and reflexes. Given the roles and components of the brainstem, it is accurate to identify this region as encompassing all three of these structures, thus making it the correct answer.