Answer: (D) Economic regions
Step-by-step explanation:
The forests in the Pacific Northwest is the main region of western United States found adjoining the Pacific Ocean. A significant part of the Pacific Northwest comprises of rustic forested land; in any case, there are a few enormous populace focuses which incorporate Seattle and Tacoma.
The economic region is mainly denoted as ER and it is basically define as gathering of complete enumeration divisions (with one special case in the Ontario) are created in the form of standard geographic unit for the examination of provincial monetary action.
Therefore, Option (D) is correct.