The development of waterways for transportation in Arunachal Pradesh is limited by:

Seasonal variations in water levels
Presence of rapids and gorges
Lack of proper infrastructure
All of the above

The correct answer is: All of the above.

Arunachal Pradesh is a state in North-East India. It is the largest state in India by area, but it has the lowest population density. The state is located in the Eastern Himalayas and is bordered by China, Bhutan, Nagaland, Assam, and Myanmar.

The development of waterways for transportation in Arunachal Pradesh is limited by a number of factors, including:

  • Seasonal variations in water levels: The water levels in the rivers of Arunachal Pradesh vary greatly throughout the year. This is due to the monsoon rains, which cause the rivers to swell during the summer months. During the winter months, the water levels in the rivers can be very low, making it difficult or impossible to navigate.
  • Presence of rapids and gorges: The rivers of Arunachal Pradesh are also characterized by rapids and gorges. This makes them difficult to navigate, especially for large vessels.
  • Lack of proper infrastructure: There is a lack of proper infrastructure for waterways transportation in Arunachal Pradesh. This includes a lack of ports, wharves, and other facilities.

These factors make it difficult and expensive to develop waterways for transportation in Arunachal Pradesh. As a result, the state relies heavily on road and air transportation.