What distinguishes Medicare from Medicaid?

The distinguishing characteristic of Medicare is that it primarily serves individuals aged 65 and older, making it a program specifically designed for this age demographic. While there are provisions for younger individuals with certain disabilities or specific health conditions under Medicare, the primary focus is on older adults. This age-based eligibility is a key feature that sets Medicare apart from Medicaid.

Income eligibility does not apply to Medicare in the same way it does for Medicaid. Unlike Medicaid, which is designed to assist low-income individuals and families and has varying eligibility requirements based on income and resources, Medicare provides coverage based on age and disability status rather than financial need. Additionally, Medicaid covers a broader range of populations, including low-income individuals of any age, and is administered jointly by federal and state governments, rather than being an exclusively federal program.

Thus, the correct answer highlights the primary age-based eligibility criteria of Medicare, which is a fundamental aspect that distinguishes it from Medicaid.