The correct answer is: b) Itanagar.
Itanagar is the capital of Arunachal Pradesh, India. It is located in the central part of the state, on the banks of the Siang River. The city was founded in 1974, and it became the capital of Arunachal Pradesh in 1975. Itanagar is a modern city with a population of over 100,000 people. The city is home to the Arunachal Pradesh Legislative Assembly, the Raj Bhavan (the official residence of the Governor of Arunachal Pradesh), and the offices of the state government. Itanagar is also a major educational center, with several universities and colleges located in the city.
The other options are incorrect for the following reasons:
- Dispur is a town in the Indian state of Assam. It is the headquarters of the Kamrup Metropolitan district.
- Tawang is a town in the Indian state of Arunachal Pradesh. It is the headquarters of the Tawang district.
- Ziro is a town in the Indian state of Arunachal Pradesh. It is the headquarters of the Lower Subansiri district.