Answer:
A.It refers to the one big city and extended suburbs that developed north and south along Puget Sound.
Step-by-step explanation:
The Puget Sound region is a coastal front region of the Pacific Northwest in the U.S. province of Washington.
The urban locale assigned the Puget Sound Region is centered on Seattle and comprises of nine regions, two urban focus urban communities and four satellite urban communities making up what has been named "Pugetopolis" Both urban center urban areas have substantial mechanical zones and seaports in addition to a skyscraper focal business region. The satellite urban areas are fundamentally rural, including a little downtown center and a little mechanical territory or port. Suburbia comprise for the most part of living arrangements, strip shopping centers, and malls. The locale is likewise home to various ports. The two biggest and busiest are the Port of Seattle and Port of Tacoma, which, whenever consolidated, involve the third biggest holder port in North America after Los Angeles/Long Beach and New York/New Jersey.