M.P. is a 66-year-old man with past medical history of hypertension and hyperlipidemia presenting to the clinic describing problems with balance and gait that have worsened in the past few months. A gait assessment reveals reduced arm swing while walking and a single halt hesitation when turning. During straight walking, he continues smoothly without freezing. The MDS-UPDRS reveals slight impairment related to postural instability and mild impairment related to both gait and freezing. Based on his history and physical exam, he is diagnosed with PD. Following his diagnosis, he mentions that he is considering retirement. Diagnosis: Parkinson Disease

1. Which of the following is not an appropriate goal of therapy for M.P.?

a. Maintain patient independence by alleviating motor symptoms.

b. Preserve patient ability to perform activities of daily living.

c. Reverse disease progression.

d. Maintain patient quality of life by alleviating nonmotor symptoms.