Final answer:
Infrastructure includes transportation systems, communication systems, education facilities, healthcare services, and government services, which are essential for economic development.
Step-by-step explanation:
Infrastructure refers to the basic structures and facilities needed for the operation of a society. This includes, but is not limited to, the transportation system (roads, bridges, traffic signals, signs), communication systems, and facilities essential for the health and well-being such as education and healthcare services. It also encompasses government services, as well as the systems required to maintain water, sanitation, and power. Importantly, infrastructure is a component of physical capital and plays a crucial role in economic development by facilitating the exchange of goods and services.