Final answer:
The Voting Rights Act of 1965 made it illegal to ask voters to pay a poll tax as a precondition to voting, aimed at ensuring all citizens could exercise their right to vote without facing financial discrimination.
Step-by-step explanation:
According to the passage from the Voting Rights Act of 1965, the situation made illegal was A. Asking voters to pay to vote, known as a poll tax. The excerpt clearly states that Congress found poll taxes unreasonable and a means to prevent persons of limited means, particularly African Americans, from exercising their right to vote. Imposing a financial burden as a precondition to voting did not align with any legitimate state interest in conducting elections and often had the discriminatory impact of denying voting rights based on race or color. Therefore, this legislation aimed to remove such barriers to ensure the constitutional right to vote was accessible to all citizens, regardless of their economic status or race.