An important limited natural resource in Washington is

Natural Resources: Large supplies of water, large reserves of timber and fertile soil round out Washington's important natural resources. Commercial value timber includes Douglas fir, Sitka spruce, western hemlock, western red cedar, ponderosa pine, western larch and lodgepole pine.

d

explanation:

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)