The correct answer is: d) All of the above.
Arunachal Pradesh is a state in northeastern India. It is the largest state in India by area, but it has the lowest population density. The state is located in the Himalayas, and it has a very difficult terrain. Many parts of the state are inaccessible by road, and the only way to reach them is by air or by foot.
The remoteness of many settlements in Arunachal Pradesh also makes it difficult to conduct the census. Many people live in remote villages, and they may not have access to basic amenities such as electricity or running water. This makes it difficult for census officials to reach them and collect data.
Arunachal Pradesh is also a linguistically diverse state. There are over 200 different languages spoken in the state, and this makes it difficult to collect data on the population. Census officials need to be able to speak the local languages in order to communicate with the people and collect data.
All of these factors make it difficult to conduct the census in Arunachal Pradesh. However, the government of India is committed to conducting the census in all parts of the country, including Arunachal Pradesh. The census is important because it provides data on the population of India. This data is used to plan for development and to allocate resources.