The correct answer is D) part of a "special relationship."
Though no longer a series of colonies, the United States retains close ties to Britain as part of a "special relationship."
The history of the United States and Great Britain have pages of wars, agreements, more wars, differences, good moments, and understanding.
Since the first English explorers arrived at North America and founded the colony of Jamestown, Virginia in 1607, there have been all kinds of events and incidents between the two nations. Heavy taxations imposed by the English Crown, rebellion acts such as the Boston Tea Party, wars such as the Revolutionary Wars, strategic alliances in World War 1 and II, but at the end, there is a tight bond that will always unite these two nations in a special kind of relationship that is reflected, for instance, in their trade relations.
The other options of the question were A) a Commonwealth. B) a dependency. C) a dominion.