While you are waiting to begin a foot race, you can feel your heart rate go up. This is the _____ at work.

Asympathetic nervous system
Bparasympathetic nervous system
Cendocrine system
Dcentral nervous system

Verified Answer :

Question: While you are waiting to begin a foot race, you can feel your heart rate go up. This is the _____ at work.                                                             Answer: A.) The sympathetic nervous system

The answer is sympathetic nervous system.