A social insurance plan for the elderly, the most extensive single welfare program is which of the following?

The correct answer is Social Security because it is the most extensive single welfare program designed specifically to provide financial support for the elderly, as well as for individuals with disabilities and certain survivors of deceased workers. Established in 1935, Social Security plays a crucial role in reducing poverty among the elderly by offering them a stable income during retirement based on their previous earnings.

While Medicare is also a significant program that provides health insurance specifically for individuals aged 65 and older, it primarily focuses on health care costs rather than income support. Social Insurance is a broader category that includes various programs like Social Security and Medicare, but it does not denote a specific program. Insurance for the Elderly is not a recognized program and may mislead regarding the specific nature of the offerings for older adults in the context of federal assistance. Therefore, Social Security stands out as the primary program uniquely dedicated to addressing the income needs of the elderly population.