The correct option is C Medulla in hindbrain
Involuntary actions in the body are controlled by medulla oblongata in the hindbrain. An involuntary action is one which occurs without the conscious choice of an organism. If it occurs specifically in response to a stimulus, it is known as a reflex. Medulla oblongata controls autonomic functions such as breathing, digestion, heart and blood vessel function, swallowing, and sneezing.