Which of the following is true about voter turnout?

Voter turnout is defined as the percentage of eligible voters who actually participate in an election by casting their votes. This characterization accurately captures the essence of voter turnout, as it emphasizes not just the act of registration, but the actual activity of voting among those who are eligible. Turnout can vary widely based on a variety of factors such as the type of election (e.g., presidential vs. local elections), demographic differences, and voter engagement efforts.

The other statements do not accurately reflect what voter turnout means. Stating that it is always over 80% in every election is misleading, as turnout can fluctuate significantly, often being lower in non-presidential elections. Defining voter turnout solely by the number of registered voters ignores the critical element of who is eligible and whether they vote. Lastly, implying that young voters are not included in voter turnout statistics is incorrect; all eligible voters, regardless of age, are counted in turnout metrics. Therefore, the correct understanding of voter turnout is that it represents the share of eligible voters who make their voices heard through the voting process.