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

Puerto Rico is the correct answer because it is an unincorporated territory of the United States. This classification means that while it is governed by U.S. federal law, it does not possess the same full status as a state. Puerto Rico has a significant degree of autonomy and its residents are U.S. citizens, but they do not have voting representation in Congress. The relationship with the U.S. gives Puerto Rico a unique status, impacting its political and economic structures.

The other options listed appear to contain variations on the name or are completely fictitious or incorrect in the context of U.S. territories. There is no recognized U.S. territory known as Puerco Rico, Pueblo Rico, or Pueblo Island, making Puerto Rico the definitive correct answer. Understanding this geographical and political context is key to recognizing U.S. territories and their implications.