Final answer:
Maine is correctly paired with the Northeast region; it is characterized by its early European settlement history, diverse economy, and rugged, forested landscape. The practice of potlatch is associated with the Pacific Northwest.
Step-by-step explanation:
The correct pairing of a state with its cultural region is Maine—Northeast. Maine, being in the far northeastern part of the United States, is part of the Northeast cultural region. This region is characterized by a historical background that includes early settlement by European colonists, a diversity of economic activities including manufacturing, and a landscape that becomes increasingly rugged and forested as one moves northward, such as in the state of Maine. The practice of potlatch is associated with the Pacific Northwest (option d), which is a cultural tradition among indigenous tribes in that area. This ceremonial feast involves the giving away or destruction of property in order to demonstrate wealth and generosity.