Polls are taken to
a. guarantee the constitutional rights of all people.
b. determine people's attitudes and viewpoints.
c. further the political socialization of individuals.
d. provide a system of checks and balances.

Cb. determine people's attitudes and viewpoints.

The purpose of the poll taxes in Southern states was to discourage African Americans from voting. The correct option in respect to all the options given in the question is option "C". In the United States of America the poll tax was a prerequisite for people to vote and this was implemented in several states. This was a discriminating measure that actually wanted to prevent the African Americans from voting. This tax emerged during the 19th century in several states of America. 

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