Correct Answer: C

Rationale: Parkinson's disease is a neurodegenerative disorder characterized by the loss of dopamine-producing neurons in the brain. Dopamine is a neurotransmitter responsible for coordinating smooth muscle movements. The decrease in dopamine levels leads to the motor symptoms associated with Parkinson's disease, such as tremors, rigidity, and bradykinesia. Serotonin, adrenaline, and GABA are not primarily implicated in the pathophysiology of Parkinson's disease.

Correct Answer: A

Rationale: Ocrelizumab is the drug of choice for progressive multiple sclerosis due to its efficacy in reducing disease activity and progression in patients with this form of the disease. Dimethyl fumarate, Teriflunomide, and Fluoroquinolones are not typically used as first-line treatments for progressive MS.

Correct Answer: B

Rationale: The correct answer is B because community health nursing focuses on improving the health of the entire community rather than just individuals or families. By addressing health issues at the population level, community health nurses work towards enhancing the overall well-being and health outcomes of the community.

Correct Answer: C

Rationale: Paraplegia is the paralysis of the lower half of the body, including both legs and often the trunk and pelvic organs. Hemiplegia refers to paralysis affecting one side of the body, while tetraplegia involves paralysis of all four limbs and the trunk. Hemiparesis is a partial weakness affecting one side of the body.

Correct Answer: A

Rationale: Community health nursing focuses on promoting health and preventing disease within the community. This approach emphasizes preventive care, health education, and community-based interventions to improve the overall health and well-being of individuals and populations. While providing care to sick individuals is part of nursing, the primary goal of community health nursing is broader and encompasses proactive strategies to enhance community health.