What is/are the components of economic infrastructure?
Economic infrastructure is defined as infrastructure that promotes economic activity, such as roads, highways, railroads, airports, seaports, electricity, telecommunications, water supply and sanitation.
Transportation-roads, bridges, rails, and airports. Energy-Production and release of that energy that's provided and maintained on the electrical grids. Water infrastructure that provides a supply of clean potable drinking water and manages the water resource.
Thus, the correct option is D.