The correct answer is: a) Rural to urban within the state.
Arunachal Pradesh is a state in northeastern India. It is the largest state in the country by area, but it has the lowest population density. The majority of the population lives in rural areas. In recent years, there has been a significant increase in rural to urban migration within the state. This is due to a number of factors, including the growth of the economy, the expansion of education and employment opportunities, and the improvement of infrastructure in urban areas.
International migration to neighboring countries is not a major factor in Arunachal Pradesh. The state shares borders with Bhutan, China, Myanmar, and Nagaland. However, there is very little cross-border migration between Arunachal Pradesh and these countries.
Inter-state migration is also not a major factor in Arunachal Pradesh. The state is relatively isolated from the rest of India, and there are few economic or employment opportunities outside of the state. As a result, there is little incentive for people to migrate to other states.
Long-distance seasonal migration is a more common phenomenon in Arunachal Pradesh. Many people from rural areas migrate to urban areas for seasonal work, such as construction or agriculture. However, this type of migration is usually temporary, and people return to their villages after the season is over.
In conclusion, the most common type of migration in Arunachal Pradesh is rural to urban migration within the state. This is due to a number of factors, including the growth of the economy, the expansion of education and employment opportunities, and the improvement of infrastructure in urban areas.