Final answer:
The two taxes that make up FICA are Social Security and Medicare tax. Therefore, the correct option is B.
Step-by-step explanation:
The two taxes that make up FICA (Federal Insurance Contributions Act) are Social Security and Medicare tax. Social Security tax is a payroll tax that provides funds for retirement and disability benefits, while Medicare tax funds healthcare for seniors and certain individuals with disabilities. Together, these taxes account for more than 80% of federal revenues.