The correct answer is: d) All of the above.
The Donyi Polo Airport in Itanagar is expected to increase tourist arrivals, reduce travel time, and connect to major Indian cities.
The airport is expected to increase tourist arrivals by making it easier for people to travel to Itanagar. This will be beneficial for the local economy, as it will bring in more money from tourism.
The airport is also expected to reduce travel time. Currently, it takes several hours to travel from Itanagar to major Indian cities by road. The airport will make it possible to travel to these cities much more quickly and easily.
Finally, the airport is expected to connect Itanagar to major Indian cities. This will make it easier for people from these cities to travel to Itanagar, and it will also make it easier for people from Itanagar to travel to these cities.
Overall, the Donyi Polo Airport is expected to have a positive impact on the economy and infrastructure of Itanagar.