A Fly Will Start Its Wings Flapping If Its Feet

Multiple Choice

A fly will start its wings flapping if its feet are not touching the ground,and stop its wings when its feet touch the ground,even when its head has been cut off.This "decision" to fly has therefore been made by

A) interneurons in the ganglia.
B) the wing and foot muscles themselves.
C) motor nerves.
D) sensory nerves.
E) the fly's brain.