Answer:
The correct answer is - Brain stem.
Explanation:
The brain stem is an area of the brain that extends from the base of the cerebrum and connects with the spinal cord. It has three parts medulla, pons, and the midbrain.
The brain stem regulates the flow of signals or the messages between the brain and other body parts. The basic functions of the brain stem to manage the basic functions of the body such as heart rate, blood pressure, sleep swallowing, and breathing. It is also involved in eye movement, hearing and vision.
Thus, the correct answer is - The brain stem.