What is one US territory?

Puerto Rico is indeed a U.S. territory and serves as a prime example of an unincorporated territory that is subject to the jurisdiction of the United States but does not have the full protections of the Constitution as states do. Residents of Puerto Rico are U.S. citizens, and while they can participate in primaries for the presidential elections, their votes do not count in the Electoral College. This unique status provides insight into how U.S. territories operate regarding governance, rights, and federal representation.

The other options listed also refer to U.S. territories: Guam, American Samoa, and the U.S. Virgin Islands are all territories, but the focus on Puerto Rico is significant due to its larger population and unique political status as a commonwealth, which significantly influences its relationship with the federal government.