How will Richard’s body react when a friend jumps in front of him and scares him?

Being startled triggers the fight-or-flight response. The sympathetic nervous system increases alertness and prepares the body to react, while the parasympathetic nervous system becomes less active. So the correct choice is B: Richard’s sympathetic nervous system will take over, and his parasympathetic nervous system will play a lesser role.

AI-written and checked against the verified answer.