Challenges faced by archaeological work in Arunachal Pradesh include:

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

Arunachal Pradesh is a state in north-eastern India. It is the largest state in the country by area, but it has a very low population density. The state is located in the Himalayas, and it is characterized by its rugged terrain and dense forests. These factors make it difficult to access many parts of the state, and they also make it difficult to conduct archaeological research.

In addition to the challenges posed by the state’s geography, archaeological work in Arunachal Pradesh is also hampered by limited funding. The state government does not have a lot of money to spend on archaeology, and this makes it difficult to hire archaeologists and to purchase the equipment and supplies that are necessary for conducting research.

The combination of these factors has made it difficult to conduct archaeological research in Arunachal Pradesh. However, despite these challenges, archaeologists have made some important discoveries in the state. These discoveries have shed light on the history and culture of the people who have lived in Arunachal Pradesh for centuries.

Here are some additional details about each of the challenges mentioned in the question:

• Remote locations: Many parts of Arunachal Pradesh are very remote, and they can only be reached by foot or by helicopter. This makes it difficult to transport equipment and supplies to these areas, and it also makes it difficult for archaeologists to travel to these areas to conduct research.
• Dense vegetation: The forests of Arunachal Pradesh are very dense, and this makes it difficult to see the ground. This can make it difficult to find archaeological sites, and it can also make it difficult to excavate sites that have been found.
• Limited funding: As mentioned above, the state government of Arunachal Pradesh does not have a lot of money to spend on archaeology. This makes it difficult to hire archaeologists and to purchase the equipment and supplies that are necessary for conducting research.

Despite these challenges, archaeologists have made some important discoveries in Arunachal Pradesh. These discoveries have shed light on the history and culture of the people who have lived in Arunachal Pradesh for centuries.