Suppose fairness is defined as those who receive the greatest benefits from government should pay the most in taxes, then which of the following taxation systems would be consistent with this notion...

Suppose fairness is defined as those who receive the greatest benefits from government should pay the most in taxes, then which of the following taxation systems would be consistent with this notion of fairness?

a. User fees for national parks.

b. Gasoline taxes to fund highway maintenance.

c. A tax on the poor to finance food stamps and other low-income assistance programs.

d. All of the answers above are consistent with this fairness concept.