Who is eligible for Medicare benefits?

Medicare benefits are primarily designed to serve specific populations, and the correct answer highlights two key eligibility criteria. Individuals become eligible for Medicare when they reach the age of 65, which is a standard threshold for eligibility in the program. Additionally, younger individuals may qualify for Medicare benefits if they have certain disabilities, such as end-stage renal disease or amyotrophic lateral sclerosis (ALS). This dual eligibility based on age and disability is a fundamental aspect of how Medicare operates, ensuring that not just seniors but also those who face significant health challenges can receive necessary healthcare coverage.

The other options present eligibility criteria that do not align with Medicare's established guidelines. For instance, the first option incorrectly includes individuals as young as 60, which does not reflect Medicare's eligibility rules. The option suggesting only seniors aged 75 and above is too restrictive compared to the broader category of those aged 65 and older. Lastly, the idea that all U.S. citizens, regardless of age, are eligible does not reflect the specific criteria set by the Medicare program, which focuses on age and disability requirements.