Final answer:
Option c)Pallidotomy is a surgical procedure used to treat Parkinson's disease by lesioning part of the basal ganglia to modulate motor control and reduce symptoms such as tremors and rigidity.
Step-by-step explanation:
Cutting a brain structure that performs an inhibitory action on motor function areas to treat Parkinson's disease is known as c) pallidotomy.
This procedure involves the surgical removal or lesioning of a part of the globus pallidus, which is part of the basal ganglia. The basal ganglia, through direct and indirect pathways, regulate motor control, and an inhibitory influence is exerted on the thalamus to decrease cortical control of movement. In Parkinson's disease, the balance between these pathways is disrupted, leading to symptoms such as tremors and rigidity. Pallidotomy can help alleviate these symptoms by modulating the activity within the motor circuit.