Poll taxes are a form a). push polls b). smear campaigns c). voter suppression d). canvassing

The Correct Answer is C.

"Voter suppression"

Explanation:

A poll tax is the fee that someone has to pay to cast vote. This practice discriminated against the people who were too poor to afford the cost of the voting.

It meant that even after the passing of the 15th amendment of the United States gave the former slaves right to vote, many people blacks or white who do not have enough money are still not able to vote because they do not have enough money to give a fee of the Poll Tax.