Answer:
Among the options given on the question the correct answer is option B.
Commonwealth of the U.S.
Explanation: The Puerto Rico was a former Spanish colony and currently it is an insular area of the United States which means in a commonwealth of United States.
The term commonwealth according to the current United States foreign policy means that Commonwealth does not provide does not provide any special any special political relationship between two countries.
Puerto Rico is not a state of US but a territory and they have their own government and adopted their own constitution. But the US congress first enacted legislation for them.
Puerto Rico had several referendum over the territorial status and they remained as the commonwealth to the US. Puerto Ricans have the United States citizenship and can vote for the Resident Commissioner of Puerto Rico.