Which nerve is responsible for the parasympathetic innervation of pelvic organs?

The pelvic splanchnic nerves are essential for providing parasympathetic innervation to pelvic organs. These nerves branch from the sacral spinal cord (S2-S4) and are responsible for innervating structures such as the bladder, rectum, and reproductive organs. The parasympathetic fibers play a crucial role in promoting processes like bladder contraction and facilitating sexual function, which are integral to the overall functioning of the pelvic organs.

The other options listed do not serve this specific function. The sciatic nerve primarily provides motor and sensory innervation to the lower limb but does not contribute to the parasympathetic supply to pelvic organs. The pudendal nerve is mainly involved in somatic innervation, supplying sensation and motor control to the perineum and external genitalia rather than parasympathetic functions. Lastly, the inferior gluteal nerve is responsible for the innervation of the gluteus maximus muscle and does not provide any parasympathetic fibers. Thus, the pelvic splanchnic nerves are correctly identified as the nerves responsible for parasympathetic innervation of the pelvic organs.