Which area or part of the brain is likely affected in a person with cerebral palsy who has movement problems in their right arm and hand? Explain your answer.

part of the brain that controls muscles

Explanation:

It affects movement, balance, and muscle tone leading to rigidity in the joints, involuntary movements, and exaggerated reflexes.

They decussate, or cross, in the brainstem; therefore, damage to the right cerebral hemisphere results in paralysis of the left side of the body ... Other causes of hemiplegia include trauma, such as spinal cord injury; brain tumours; and brain infections.