Concept:The central nervous system (CNS) handles both voluntary and involuntary actions through different regions.
Explanation:Unconscious actions are involuntary responses that happen without our awareness.
Reflex actions, like pulling your hand away from heat, are controlled by the spinal cord.
The spinal cord quickly relays signals between the body and the brain and coordinates these reflex responses.
The cerebellum mainly coordinates balance and voluntary movement.
The cerebrum controls conscious thought and voluntary actions.
The optic nerves are sensory nerves for vision, not part of the CNS control centre for actions.
Answer:The correct option is the spinal cord.
C. spinal cord