An older patient exhibits a shuffling gait, lack of facial expression, and tremors at rest. The nurse will expect the provider to order which medication for this patient?

A. Carbidopa-levodopa The symptoms described, including a shuffling gait, lack of facial expression, and tremors at rest, are characteristic of Parkinson's disease. Carbidopa-levodopa is a common medication used in the management of Parkinson's disease. B. Donepezil Donepezil is used in the treatment of Alzheimer's disease, a condition characterized by cognitive decline and memory impairment. It is not indicated for Parkinson's disease. C. Rivastigmine Rivastigmine is another medication used in the treatment of Alzheimer's disease, and it is also used in Parkinson's disease dementia. However, it is not the primary medication for the motor symptoms of Parkinson's disease. D. Tacrine Tacrine was once used in the treatment of Alzheimer's disease, but it is no longer commonly prescribed due to safety concerns and the availability of newer, safer medications. It is not indicated for Parkinson's disease.