Mr. Anderson suffers from Parkinson's disease and his shaking arm movements are so severe that he has difficulty feeding or dressing himself without help. His symptoms are most likely to be linked with an undersupply of the neurotransmitter
A) cortisol.
B) dopamine.
C) serotonin.
D) oxytocin.

Dopamine

Explanation:

The role of dopamine in Parkinson's disease is very important. It is the neurotransmitter that plays a crucial role in a disease called Parkinson. It is the main agent that causes Parkinson's disease. Dopamine is related to our initiation in movement. The patient who suffered from Parkinson's disease has lost dopamine in substance nigra in the brain. The patient lost his coordination between the brain and the muscle movement.

Thus here Mr. Anderson was suffering from Parkinson's disease that causes due to the loss of dopamine.

i dont believe in religion. lets all be peace