Answer:
2. O oath of allegiance, application and fees, exams and interview
Explanation:
The Oath of Allegiance to the United States is a sworn declaration that every citizenship applicant must recite during a formal ceremony in order to become a naturalized American citizen. The Oath ceremony is a tradition dating back to the 18th century.
When taking the Oath, the new citizen promises to fulfill the following duties:
Attending the Oath of Allegiance ceremony is mandatory as the final step of the naturalization process. You must satisfy this requirement of U.S. citizenship in order to naturalize and become a U.S. citizen.
You need:
Hope this helps, have a nice day/night! :D