1. Which U.S. household income "quintile(s)" (fifths) have experienced increases in the share of total income they received in 2016 (compared to 1997)? A) Only the highest quintile B) Only the highest and second highest quintiles. C) Only the highest, second highest and middle quintiles D) Only the highest, second highest, middle and second lowest quintiles 2. Which U.S. household income "quintile(s)" (fifths) have experienced decreases in the share of total income they received in 2016 (compared to 1997)? A) Only the lowest quintile B) Only the lowest and second lowest quintiles C) Only the lowest, second lowest and middle quintiles. D) Only the lowest, second lowest, middle and second highest quintiles 3. Which type of tax makes the income distribution more equal by redistributing from rich to poor? A) Regressive tax B) Proportional tax C) Progressive tax D) Flat tax 4. Which of the following taxes are progressive? (There may be more than one correct answer. Circle all that apply.) A) Indiana state sales tax B) Indiana state income tax C) Federal income tax D) Social security tax