What type of nerve carries messages to the brain and spinal cord to produce movement?

The correct choice identifies the function of motor nerves, which are responsible for carrying messages away from the brain and spinal cord to the muscles, facilitating movement. Motor nerves transmit signals that lead to muscle contractions and physical actions.

In contrast, sensory nerves carry information from sensory receptors throughout the body to the brain and spinal cord, allowing us to perceive sensations such as touch, pain, and temperature. Autonomic nerves are part of the autonomic nervous system, which controls involuntary bodily functions such as breathing and heart rate, rather than voluntary movement. Interneurons serve as intermediaries within the nervous system, connecting sensory and motor neurons, but they do not directly carry messages to produce movement themselves. This understanding delineates the specific role of motor nerves in the context of movement, highlighting why this is the correct answer.