Which action is considered a mandatory responsibility of us citizenship?

holding political office
serving in the army
serving on a jury
joining a political party

serving on a jury

Explanation:

For the American people, participation in a jury is the duty of every citizen. This duty is constitutionally enshrined as the bulwark of citizens' freedom, since for Americans the exercise of democracy by the participation of the people in public life occurs not only by practicing the right to vote, but also by the performance of the right to integrate Jury court.

the answer is a. 250 percent.

during the 20th century, the role of the vice president has evolved into more of an executive branch position. now, the vice president is usually seen as an integral part of a president's administration and presides over the senate only on ceremonial occasions or when a tie-breaking vote may be needed.