All of the following except___ are signs or symptoms of Parkinson's disease.

The correct answer is C because loss of vision in one eye is not a typical sign or symptom of Parkinson's disease. A, B, and D are all common signs of Parkinson's disease. A - Mask-like facial expressions result from decreased facial muscle movement. B - Shuffling gait is a characteristic walking pattern in Parkinson's patients. D - Tremors without intention (at rest) are a classic symptom of Parkinson's disease due to disrupted brain signals. Therefore, C is the odd one out as it is not directly associated with Parkinson's disease manifestations.