How can people become United States citizens?

Why this is the answer

USCIS recognizes three routes to U.S. citizenship and accepts any one of them: being born in the United States under the conditions set by the 14th Amendment, naturalizing, or deriving citizenship under conditions set by Congress. Birthright citizenship comes from the first sentence of the 14th Amendment, ratified in 1868. It declares that all persons born or naturalized in the United States, and subject to its jurisdiction, are citizens of the nation and of the state where they live. That one sentence covers two of the three answers, which is why the official wording for birth points to this amendment by number. Naturalization is the route you are on. The Constitution gives Congress the power to establish a uniform rule of naturalization, and the study guide sums up today’s requirements: be at least 18, be a lawful permanent resident, file an application with fees, meet the residence and physical presence requirements, show good moral character and attachment to the principles of the Constitution, read, write, speak and understand English, know U.S. history and government, complete the test and interview, and take the Oath of Allegiance at a ceremony. Derivation is the third path, and the official answer describes it only in general terms: citizenship obtained under conditions that Congress has set in law. You can answer it the same way. Any one of the three verbs, said clearly, is a full answer: be born here, naturalize, or derive citizenship. If you choose birth, adding “under the 14th Amendment” shows you know where the rule comes from. Be careful with the number. This section of the test asks about several other amendments, including the ones on voting, and it is easy to swap one for another after studying them side by side. A simple way to file them apart: the 14th answers who belongs, and the voting amendments answer who gets to cast a ballot.