Final answer:
More than 1/2 of older people in the U.S. depend on Social Security for more than 1/2 of their income.
Step-by-step explanation:
According to the information provided, more than 1/2 of older people in the U.S. depend on Social Security for more than 1/2 of their income. The exact percentage may vary, with some retirees relying on Social Security for all of their income. However, it is clear that a significant portion of their income comes from Social Security.