I think it could be either A or D, kind of leaning more towards D. Let me know if this helped!!
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.
Your answer is C. Have anxiety about going back to sleep after an incident.
If you suffer from night terrors, you might not want to go back to sleep, either because you are too scared, or you know you won't be able to stay asleep.