Carry impulses from all body parts to the brain

• A. Interneurons
• B. Mixed nerves
• C. Sensory nerves/ Afferent nerves
• D. Motor nerves/ efferent

Answer: (C)

The key idea is the direction of signal transmission. Sensory nerves, or afferent nerves, carry information from receptors all over the body toward the central nervous system, including the brain. They collect data from skin, organs, muscles, and sensory organs and bring it to the brain for processing, so this matches the idea of impulses traveling to the brain.

Interneurons are neurons within the brain and spinal cord that process and relay signals between sensory and motor neurons, not pathways carrying signals from the body to the brain. Motor nerves (efferent) carry impulses away from the brain to muscles and glands, enabling actions, which is the opposite direction of what the question describes. Mixed nerves contain both sensory and motor fibers and can transmit in both directions, but they are not solely carrying impulses to the brain from all body parts. Therefore, the best fit is sensory nerves.