Which of the following is a US territory?

The correct response identifies Guam, Puerto Rico, and American Samoa as U.S. territories because these regions are under the jurisdiction of the United States but do not have the full privileges of a state. U.S. territories are areas that are not admitted as states but are still part of the country, meaning they fall under the governance of U.S. law.

Guam is located in the western Pacific and serves as an important strategic military base. Puerto Rico, situated in the Caribbean, has a unique cultural heritage and political status, where residents are U.S. citizens but cannot vote in presidential elections. American Samoa, in the South Pacific, is the only U.S. territory that has an indigenous population that can grant citizenship status.

The other options mentioned relate to states or regions within the United States proper. Hawaii is the 50th state, Florida Keys are part of Florida, and New Mexico is also a state. Thus, they are not considered territories, as they have the full rights and responsibilities of U.S. states.