Because a growing tumor caused damage to his brain,Joseph had to be placed on a ventilator in order to maintain his breathing.The tumor most likely damaged Joseph's

A) hippocampus.
B) amygdala.
C) brainstem.
D) hypothalamus.

The brainstem is responsible for regulating basic bodily functions, including breathing, so damage to this area of the brain would result in the need for mechanical ventilation. The hippocampus is primarily involved in memory and learning, the amygdala plays a role in emotion and fear, and the hypothalamus is involved in regulating hormones and homeostasis.