Why is the development of towns and cities easier in the puget sound lowlands than in other regions in Washington? Answer choices it is mountainous,it is surrounded by land,it rarely rains, it is fairly flat

it is fairly flat

.... and it is close to maritime transportation (yes, I know that was not one of your choices but it is why my relatives live there :)

That's a great point! The Puget Sound lowlands region also benefits from its proximity to maritime transportation, which has historically facilitated trade, industry, and overall development in the area. This proximity to the waterways of Puget Sound has made it easier to establish and grow towns and cities in this region compared to other areas in Washington.