During an assessment of a 62-year-old man, the nurse notices the patient has a stooped posture, shuffling walk with short steps, flat facial expression, and pill-rolling finger movements. These findings would be consistent with:

A. Cerebral palsy affects movement and coordination but typically presents with different types of motor impairment and not the specific signs of Parkinsonism. B. Ataxia involves a lack of coordination, often affecting gait, but it would not typically involve the specific signs such as pill-rolling tremor or stooped posture. C. Muscular dystrophy involves muscle weakness and atrophy but does not typically cause the motor symptoms observed in this patient. D. Parkinson's disease is characterized by the classic signs of tremor (pill-rolling), bradykinesia (slow movement), postural instability, and a shuffling gait, which the patient exhibits.