The limbic system functions in the regulation of ____.

A) breathing
B) emotions
C) heart rate
D) peristalsis
E) vision

The limbic system is primarily involved in the regulation of emotions and emotional behavior. It includes structures such as the amygdala, hippocampus, and hypothalamus, which are all involved in the processing and regulation of emotions, motivation, and social behavior. While the limbic system may indirectly influence some physiological functions, such as heart rate and respiration, these functions are primarily regulated by other parts of the brain and nervous system.