live in the U.S. for 5 years > understand the fundamental of U.S. history and government > swear allegiance to the U.S. Constitution
Explanation:
According to ucis.gov, to become an American citizen, you must have first lived in the U.S. for at least three or five years, be of 18 years of age prior to filing the document of citizenship, be able to read, write, and speak English, have a knowledge of U.S. history and government, and swear the Oath of Allegiance. Out of the answers you have provided, "<em>live in the U.S. for 5 years > understand the fundamental of U.S. history and government > swear allegiance to the U.S. Constitution</em>" seems to compose of the most relevant steps <u>in order</u> to become a naturalized citizen.
