Which system includes sensory and motor neurons?

The somatic nervous system is indeed the correct choice because it encompasses both sensory and motor neurons that allow for voluntary control of body movements and the processing of sensory information. This system is primarily responsible for interacting with the external environment, enabling the perception of sensations such as touch, pain, and temperature through sensory neurons, while also facilitating the execution of voluntary movements through motor neurons.

The peripheral nervous system, while it includes the somatic nervous system, also encompasses the autonomic nervous system, which regulates involuntary processes. The autonomic system primarily controls things like heart rate and digestion and does not include the direct control of voluntary movements. The cognitive nervous system is not an established classification in neuroscience and is not recognized in the context of neural structures or function. Hence, focusing on the somatic nervous system allows for a clear understanding of how both sensory input and motor output are integrated for voluntary actions.