Can someone help me with this economics problem?

[trish87]

Which of the following tax systems would place the heaviest tax burden on poor and moderate income families?

a) proportional tax
b) progressive tax
c) regressive tax

[Puffadder]

C. A hidden example of a regressive tax is the tax on tobacco and the state-sanctioned lotteries. The poor pay far more proportionately than the educated, producers of society, who don't buy tobbaco and lottery tickets at nearly the same rate per capita.

[meg]

c) for the net effect of the various taxes imposed by the US federal government on various income groups see http://www.visualizingeconomics.com/2008/03/23/federal-income-tax-rates-by-household-income/