Final answer:
Social Security is a pay-as-you-go system where the benefits of current retirees are funded by the payroll taxes of current workers. Retired individuals, disabled individuals, and surviving dependents are the primary beneficiaries of Social Security.
Step-by-step explanation:
Social Security is a pay-as-you-go system, which means that the benefits received by current retirees are funded by the payroll taxes of current workers. In this system, workers contribute a portion of their earnings to fund the benefits of those who are currently retired. As populations age and there are more retirees compared to workers, the pay-as-you-go system faces challenges in sustaining the program.
Regarding who tends to benefit more from Social Security, it is generally designed to provide financial support and security to retired individuals, disabled individuals, and the surviving dependents of deceased workers. Therefore, these groups tend to benefit more from Social Security.