When faced with danger, what component of the nervous system is immediately activated for basic survival?

Question

Quizplus · Accepted Answer

The sympathetic nervous system is responsible for the body's "fight or flight" response, which is a basic survival reflex to danger. It increases heart rate, dilates pupils, constricts blood vessels, and increases adrenaline production to aid in the body's response to threat.

Answer: D) Parasympathetic 
 The parasympathetic nervous system is responsible for the body's "rest and digest" response and operates in a more subdued manner than the sympathetic nervous system. It decreases heart rate, constricts pupils, increases blood flow to the digestive system, and promotes relaxation. It is not the immediate response when faced with danger.

When Faced with Danger, What Component of the Nervous System