Final answer:
The student is most likely suffering from Parkinson's disease, a degenerative disorder of the central nervous system that affects muscular movement and posture.
Step-by-step explanation:
The student is most likely suffering from Parkinson's disease.
Parkinson's disease is a degenerative disorder of the central nervous system that affects the muscular system and movement. The main symptoms of the disease include muscle tremors, muscle rigidity, loss of control of fine motor movements, disturbances in posture, walking difficulties, and sluggish reflexes. Patients with Parkinson's disease often have a characteristic expressionless face and walk laboriously in a crouch.
It is important to note that Parkinson's disease can also be accompanied by depression and dementia in later stages.