Which of the following statements related to the nervous system is correct?
a. the nervous system, comprised of two major components, i. e., the peripheral nervous system (pns) and the central nervous system (cns), has three main functions: sensory input, integration of data, and motor output.
b. the pns is subdivided into sensory (afferent) and motor (efferent) divisions.
c. afferent sensory neurons conduct signals from the pns to the cns. efferent motor neurons conduct signals from the cns to the pns.
d. all of the above.