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

Participating in democracy often involves engaging in activities that influence government and public policy. Voting is a fundamental way for Americans to express their preferences and have a say in who represents them and what policies are implemented. It enables citizens to choose their leaders, affect legislation, and express their opinions on various issues.

While joining a union can support worker rights, attending church often reflects personal beliefs and community involvement, and taking a driving test is related to personal licensing rather than civic engagement, these activities do not directly contribute to the democratic process in the same way that voting does. Voting is a cornerstone of democracy, allowing citizens to actively participate in shaping their governance and community.