The correct answer is "a voice is provided for all citizens."
In a modern democracy, a voice is provided for all citizens.
This one of the most important characteristics of modern democracy, that every single citizen has a voice to express their opinions and concerns.
The most direct way to participate in a democracy is to cast your vote during elections. People have the right to vote for their President and representatives in Congress. Then, once the candidate is in office, people have the right to closely follow the representative actions to deliver the expected results.
If that is not the case, or citizens believe that the representative is not acting to serve the people or there are questions about the representative ethics, citizens can demand explanations and solutions.