Answer:
CNS, sensory.
Step-by-step explanation:
Neurons is the structural and functional unit of the nervous system. The nervous system is divided into two main parts - central nervous system and peripheral nervous system.
The central nervous system constitute the brain and spinal cord. The CNS contains both the afferent and efferent neurons depending on the direction of their signal transmission. Afferent or sensory neurons are responsible for the conduction of sensory input from the sensory receptors.
Thus, the answer is CNS, sensory.