Final answer:
The responsibility of citizens of the United States is serving on a jury when called. Volunteering for a political party and donating to campaigns are voluntary actions. Worshipping at a religious institution is a right but not a responsibility.
Step-by-step explanation:
A responsibility of citizens of the United States is serving on a jury when called. This is an important civic duty that ensures a fair trial by a jury of one's peers. Citizens are randomly selected and required to participate in the judicial process.
Volunteering for a political party and donating to campaigns are both examples of political participation; however, they are not considered responsibilities but rather voluntary actions that individuals can choose to engage in to support a particular political cause or candidate.
Worshipping at a church, synagogue, temple, or mosque is a protected right of citizens and falls under the First Amendment's guarantee of freedom of religion. While it is an important exercise of one's beliefs, it is not a responsibility required by the government.
Learn more about Responsibility of citizens of the United States