The actions that contribute to being a responsible American citizen from your provided list are:
- Voting in elections - both primaries and general elections - Participating in the electoral process is a fundamental duty of citizens.
- Taking off work to serve on a jury - Jury service is an important civic duty that helps ensure a fair trial.
- Staying informed on government issues - Being informed allows citizens to make educated decisions and engage in civic discussions.
- Paying taxes honestly and on time - Fulfilling tax obligations is vital for the functioning of government and public services.
The other options (suppressing what others say, forming opinions based on the complaints of others, and accepting information only from one source) do not align with the principles of responsible citizenship, which encourage open dialogue, critical thinking, and seeking diverse perspectives.