To improve connectivity and support industrial growth, there is a focus on:

The correct answer is: d) All of the above.

Road and rail infrastructure are important for connecting different parts of the country and for transporting goods and people. Inland waterways development can help to reduce the cost of transportation and can also be used for tourism. Upgrading airports can help to attract more tourists and businesses to the country.

Here is a brief explanation of each option:

• Road and rail infrastructure: Roads and railways are essential for connecting different parts of the country and for transporting goods and people. They also play a role in economic development, as they make it easier for businesses to operate and for people to get to work.
• Inland waterways development: Inland waterways are rivers, canals, and other watercourses that can be used for transportation. They are often cheaper to use than roads or railways, and they can also be used for tourism.
• Upgrading airports: Airports are important for connecting a country to the rest of the world. They also play a role in economic development, as they make it easier for businesses to import and export goods.

All of these factors are important for improving connectivity and supporting industrial growth.