Question

The Social Security Administration faces new challenges in the twenty-first century because

Answer 1

I believe the answer is: C.There are a Greater number of retirees in the system

The main duty of social security administration is to  manage social insurance program that consist of retirement planning, disability compensation, and survivors' benefits.

Due to the development of health industry, people in united states have higher life expectancy, which is really good in a certain way, but it also create large amount of retirees that needed to be supported by the government.

Answer 2

C.There are a Greater number of retirees in the system