what is the most widely used source of retirement income? a. social security b. pensions c. employer 401(k)…

Brief Explanations:

Social Security is a government - run program in many countries and is accessible to a large number of workers. It is designed to provide a basic level of income in retirement and is more widespread compared to pensions (which are less common in modern workplaces), employer - sponsored 401(k) plans (which not all employers offer), and individual retirement accounts (which require individual initiative and financial planning).

Answer:

A. Social Security