Final answer:
Medicare Supplements, also known as Medigap, has its open enrollment period starting at age 65. This aligns with the standard Medicare eligibility age, marking the time when individuals can begin to coordinate their additional health coverage.
Step-by-step explanation:
The open enrollment period for Medicare Supplements begins at age 65. Medicare is a government program that provides health insurance primarily for individuals who are 65 years of age or older. In the United States, Medicare has been a significant part of the healthcare system since 1965, assisting seniors with their primary medical care needs. The importance of the elderly demographic in political and social arenas is highlighted by their high voter turnout rates, with 76% of those aged 65-74 voting in the 2020 presidential election, which was a higher participation rate compared to younger age groups. Understanding Medicare eligibility is crucial for planning healthcare coverage in retirement.