Which of the following is a U.S. territory?

Puerto Rico is indeed a U.S. territory, which means it is an area that is under the jurisdiction of the United States but is not a state. The relationship between Puerto Rico and the U.S. is unique; residents are U.S. citizens, but they do not have the same voting rights as citizens in the states, particularly in federal elections. Puerto Rico has its own local government and operates under its own constitution, but the U.S. federal government has authority over certain matters.

The Virgin Islands and Guam are also U.S. territories, which means that while they are not states, they fall under U.S. sovereignty and have certain rights and privileges linked to that status. Hawaii, on the other hand, is a state and not a territory, having achieved statehood in 1959.