Correct Answer: Economic infrastructure

Solution : The correct answer is (b) Economic infrastructure

The type of infrastructure that includes roads, railways, airports, and ports is economic infrastructure. Economic infrastructure refers to the physical structures and facilities that support economic activities and contribute to the functioning of an economy. It includes transportation infrastructure, such as roads, railways, airports, and ports, which are essential for the movement of goods, services, and people. These transportation networks facilitate trade, commerce, and business interactions, connecting producers, consumers, and markets. Economic infrastructure also encompasses other components such as power plants, water supply systems, telecommunications networks, and industrial parks, which are critical for economic development and productivity. The purpose of economic infrastructure is to provide the necessary foundation and support for economic growth, development, and efficiency.