When a traumatic event is so severe that the body cannot handle the effects, the nervous system can basically "shut
down" and enter a state called
O A. hypertension
B. standby
C. shock
D. closure

I think it's Shock.

Explain: From reading up on this some time ago, I remember that Shock is when something such as the spinal cord get damaged or injured. This can cause the body to lose function of the sympathetic nervous system. I could be wrong with this, I just remember learning somewhat about Shock.