A 72-year-old male presents to the clinic with a 6-month history of progressive difficulty walking, frequent falls, and a noticeable decline in memory. His wife reports that he has also been experiencing episodes of urinary incontinence. On examination, you observe a wide-based, unsteady gait. Imaging studies reveal enlarged ventricles without significant cortical atrophy, raising suspicion for normal-pressure hydrocephalus (NPH). Which of the following triads of symptoms is most characteristic of normal-pressure hydrocephalus in this patient?
