Final answer:
The stage characterized by bilateral limb involvement with a masklike face and a slow, shuffling gait in Parkinson's Disease is Stage III or Moderate Parkinson's disease.
Step-by-step explanation:
The stage characterized by bilateral limb involvement with a masklike face and a slow, shuffling gait in Parkinson's Disease is known as Stage III or Moderate Parkinson's disease.
This stage is marked by progression of symptoms, including increased slowness of movement, balance difficulties, and loss of facial expression.
The shuffling gait is a result of bradykinesia or slowed movement, which can make walking challenging.