Which healthcare program provides services to both children and the elderly?

The correct answer is Medicaid, which is known for providing healthcare services to various populations, including children and the elderly. Medicaid is a joint federal and state program that assists low-income individuals and families in affording healthcare. It covers a broad range of services, including hospital visits, physician services, long-term care, and preventive care.

For children, Medicaid covers a significant population through programs like the Children's Health Insurance Program (CHIP), which is specifically designed to provide health coverage for children in families with incomes too high to qualify for regular Medicaid but too low to afford private coverage.

For the elderly, Medicaid plays a vital role, especially in covering long-term care services, which Medicare does not fully cover. It helps support costs related to nursing homes and home health care, ensuring that older adults with limited financial means still have access to necessary medical services.

In contrast, Medicare primarily serves individuals aged 65 and older, not specifically including children. CHAMPUS, now known as TRICARE, is primarily for military personnel and their families. The POS (Point of Service) plan is a type of managed care plan that combines features of both HMO and PPO plans but does not cater specifically to children and the elderly as Medicaid does.