D is correct answer......
The answer to your question is D Norovirus
Answer:
Autonomic nervous system
Explanation:
The Autonomic nervous system has to do with the "fight or flight" and "rest and digest" branches. It has to do with increased heart rate, butterflies in the stomach, etc.
Answer:
it's the adrenal gland
Explanation:
its because when you get stressed hormones related to that gland start a process initiated by the sympathetic nervous system when you encounter a serious/stressfilled situation, which cause the flight or fight response.