Answer: D) Motor neuron
Explanation: The sympathetic nervous system prepares the body for situations that require alertness or strength, such as situations that arouse fear, anger, emotion, or shame ("fight or flight" situations). In this type of situation, the sympathetic nervous system stimulates the heart muscles to increase the heart rate, dilates the bronchial tubes of the lungs (increases oxygen retention) and causes the dilation of blood vessels that supply the heart and skeletal muscles (increasing the blood supply).
