The correct answer is C. Knowledge of the American political system
Explanation:
To be a good citizen of any country including one in the United States one of the most important qualities is to be well-informed especially in terms of how politics work on your country and community, in this way as a citizen you can participate in decisions related to politics as well as understand the events occurring on it such as new laws or policies, proposals of candidates, the actions of politicians, political issues, among others. All of these allow citizens to participate actively in their community and nation and do this based on information rather than only opinions. Also, to be a good citizen it is not necessary to have money or connection. According to this, the most critical for being a good citizen is "knowledge of the American political system".