Answer:
the answer is D, "residence in the United States."
Step-by-step explanation:
One of the requirements for naturalization in the United States is residence in the United States. Generally, applicants for naturalization must have been a permanent resident (green card holder) for at least 5 years and have spent at least half of that time physically present in the United States.
Additionally, applicants must meet other requirements, including being able to speak, read, and write basic English; having a basic understanding of U.S. history and government; having good moral character; and taking an oath of allegiance to the United States.
There is no requirement for a large payment to the U.S. government, although there is a fee for processing the naturalization application. Service in the armed forces is not a requirement for naturalization, although military service can provide certain benefits for non-citizen service members. Finally, being willing to work in certain jobs is not a requirement for naturalization in the United States.