What will happen if Richard’s friend jumps in front of him and scares him?

Richard’s central nervous system will take over, and his peripheral nervous system will have a lesser role.

Richard’s peripheral nervous system will take over, and his central nervous system will have a lesser role.

Richard’s sympathetic nervous system will take over, and his parasympathetic nervous system will have a lesser role.

Richard’s parasympathetic nervous system will take over, and his sympathetic nervous system will have a lesser role.