Final answer:
Pelvic parasympathetics arise from the lumbar and sacral levels of the spinal cord, corresponding to the correct answer B) Lumbar and sacral.
Step-by-step explanation:
The levels of the spinal cord at which pelvic parasympathetics arise are lumbar and sacral. The correct answer is B) Lumbar and sacral. This is because the parasympathetic nervous system is often referred to as the craniosacral system, as the preganglionic neurons are located in the brain stem and at the sacral levels of the spinal cord. In other words, the parasympathetic fibers that affect the pelvic region originate from the sacral spinal cord (S2-S4 segments), regulating the function of the pelvic organs.
The levels of the spinal cord at which pelvic parasympathetics arise are lumbar and sacral. The parasympathetic division of the autonomic nervous system is named the craniosacral system, as the preganglionic neurons are located in the nuclei of the brain stem and the lateral horn of the sacral spinal cord.