Which of the following is a mandatory responsibility of a U. S. Citizen? A) Pay taxes
B) Jury duty
C) Selective service
D) All of the above
If you don't know please don't answer. thank you very much.

Which of the following statements best describes the terms of the treaty of guadalupe-hidalgo? a the treaty ended the mexican-american war, resulting in the u.s. finally being able to finish building railroads in texas. b the treaty ended the mexican-american war, resulting in mexico and the u.s. going back to their pre-war conditions. c the treaty ended the mexican-american war, resulting in the u.s. facing a lot of international backlash for the war. d this treaty ended the mexican-american war, resulting in mexico ceding a large amount of land to the united states.