The correct answer is: d) All of the above.
Roads and highways are important for the transportation of goods and people, which is essential for industrial growth. Railways are also important for the transportation of goods and people, and they can also be used to transport heavy machinery and other equipment that is needed for industrial development. Ports and waterways are important for the transportation of goods and people, and they can also be used to import and export raw materials and finished products.
In addition to the above, the development of other infrastructure, such as power plants, water supply systems, and telecommunications networks, is also crucial for industrial growth in Assam. These infrastructure facilities provide the essential services that businesses need to operate and grow.
The development of all of these infrastructure facilities will require a significant investment of time and money. However, the benefits of such an investment are likely to be significant, as they will help to create jobs, boost economic growth, and improve the quality of life for the people of Assam.