Final answer:
The C)65-74 age group benefits the most from Social Security benefits.
Step-by-step explanation:
The age group that benefits the most from Social Security benefits is the 65-74 age group.
This is because individuals in this age group have reached the age of retirement and are more likely to be dependent on Social Security as a source of income.
Additionally, individuals in the 65-74 age group are not yet eligible for other benefits that are available to those who are 75 and older, such as increased Medicare coverage.