A 6-year-old boy whose family recently welcomed home a new baby started wetting the bed. These episodes have occurred at least twice a week for the past 3 months. The nurse practitioner should explain this behavior to the parents as which of the following?

Choice A reason: Bedwetting at this age, particularly triggered by stress such as a new sibling, is not abnormal in frequency and timing, but labeling it simply as "normal behavior" overlooks the clinical terminology and potential interventions. Choice B reason: This is correct. Nocturnal enuresis is the medical term for involuntary urination during sleep in children aged 5 or older. Stressors such as new family dynamics can precipitate episodes. Reassurance and behavioral interventions are typically appropriate. Choice C reason: Diabetes mellitus may cause polyuria, but in a child with isolated bedwetting without other symptoms (excessive thirst, weight loss, polyphagia), this is unlikely. Choice D reason: Neurogenic bladder is associated with neurological conditions affecting bladder control, often presenting with daytime incontinence or other neurologic deficits, which are absent here.