Answer: Cerebellum
Explanation: We have to elimnate the other answers to figure out which one is correct.
The brain stem is number six
The spinal cord is also number six, but way lower
The cerebrum is like the whole brain
Therefore, leaving us with cerebellum, cerebellum is the correct answer
The inferior vena cava brings deoxygenated blood back into the heart from the lower body. For comparison, the part that directs deoxygenated blood from the upper body is the superior vena cava.