The Federal Income Tax is a PROGRESSIVE TAX, Because, The higher the income a person has, The higher the percentage that person pays in tax.
Explanation of What's a Progress Tax's Perentage is:
A Progressive Tax's Percentage is dependent upon the Income Bracket you are in. Therefore, if you are in a higher income bracket, this means, you earn more. However, you would pay a much higher percentage, than someone in the lower income bracket. This is why it is called a, "Progressive Tax", Because, it gets progressively bigger.
Hope that helps!!! : )
It would be "d. appointment power" that allows him or her to appoint ambassadors, cabinet members, and all military officers, since this is one of the ways in which the president exerts his power over the nation.