Karl visited his doctor because he found he had difficulty sitting upright and controlling his hands and movements. Which neurological disorder

do you think Karl may have?

A amyotrophic lateral sclerosis

B. multiple sclerosis

C. Alzheimer disease

D. Parkinson disease

D. Parkinson disease

Step-by-step explanation:

Karl is having difficulty sitting upright and controlling his hands and movements. Among the given options for diseases corresponding to this symptom:

amyotrophic lateral sclerosis : causes weakness of muscles and loss of control of muscles.

multiple sclerosis : causes breakdown of signal transmission between brain and rest of the body.

Alzheimer disease : causes loss of memory and cognition

Parkinsons disease : causes difficulty in balancing the body and limb movement.

So among the given options Parkinsons disease is the most relevant neurological disorder corresponding the symptoms exhibited by Karl.