The activation of the sympathetic nervous system results in a. an increase in digestion b. a decrease in perspiration c. a decrease in heart rate d. an increase in respiratory rate e. an increase in salvation

The right option is; D. An increase in respiratory rate  

The activation of the sympathetic nervous system results in an increase in respiratory rate.

The sympathetic nervous system (SNS) is a part of the autonomic nervous system that induces the body's fight or flight response. The sympathetic nervous system functions through various networks of neurons and its activation results in pupil dilation, increased perspiration (sweating), decreased peristalsis (muscle contraction), increased heart rate, and increased blood pressure.