Answer:
The correct answer is the option D: A proportional tax.
Explanation:
On one hand, ''medicare tax'' is the name given to a payroll tax that applies to all earned incomes and whose main focus is on supporting the person's health coverage when that person becomes eligible for medicare. In addition, it is deducted from the paycheck in an automatically way every month and is a tax that every citizen in the United States are must pay on their earnings.
On the other hand, a ''proportional tax'' is an income tax system where the percentage of the tax is the same for every taxpayer, no matter their income.
