Which of the following is a way that Americans can participate in their democracy?

Participating in democracy is a fundamental aspect of civic engagement that enables citizens to have a voice in their government and influence decision-making processes. Voting is one of the most direct and impactful ways Americans can participate in their democracy. Through voting, citizens have the opportunity to choose their representatives, express their opinions on various issues, and shape policies that affect their lives and communities. This participation ensures that the government remains accountable to the people and that diverse perspectives are represented in the political framework.

While joining the military, writing a book, or traveling abroad can be meaningful activities, they do not directly contribute to the democratic process in the same way that voting does. Joining the military serves the purpose of national defense, writing a book can be a means of expression and sharing ideas, and traveling abroad may broaden personal horizons and understanding of other cultures, but none of these options provide a mechanism for citizens to influence their government and its policies directly like voting does.