Medicare Part A primarily provides coverage for which of the following?

Medicare Part A is primarily designed to provide coverage for hospital stays and inpatient care. This includes hospitalization in acute care facilities, hospice care, and skilled nursing facility care following a hospital stay. The focus of Part A is on inpatient services, ensuring beneficiaries receive necessary medical care when hospitalized.

Routine doctor visits, prescription medications, and preventive services are covered under different parts of Medicare. Specifically, routine doctor visits are typically covered under Medicare Part B, while prescription medications are primarily addressed through Medicare Part D. Preventive services are also generally part of Medicare Part B, which emphasizes outpatient services that include annual check-ups and screenings designed to prevent illness or detect health issues early on.

Thus, the correct answer captures the essence of what Medicare Part A specializes in, which is critical for beneficiaries needing hospital-based care.