how does the brain coordinate with musculo-skeletal system when you see a snake?

A. the nerve cell will deliver a message to the led to run

B. the eyes welcome and the legs to run

C.after the brain receives and analyze the message it will right away sent a command message to the legs to get ready and perform a corresponding action which is to run

D. the message will be processed and command to see the snake

I really need the answer right now​