The correct answer is: c) Maintaining roads in hilly areas.
Nagaland is a state in north-eastern India with a population of over 1.9 million people. It is a mountainous state with a large number of rivers and streams. The terrain makes it difficult to build and maintain roads, and the state government has limited resources to do so. As a result, many of the roads in Nagaland are in poor condition. This makes it difficult for people to get around, and it also makes it difficult for businesses to operate.
The other options are also challenges, but they are not as significant as the challenge of maintaining roads in hilly areas. Traffic congestion is a problem in some parts of Nagaland, but it is not as widespread as in other parts of India. Funding limitations are a problem for all states in India, but Nagaland is not as severely affected as some other states. Land acquisition issues are a problem in some parts of Nagaland, but they are not as widespread as the problem of maintaining roads in hilly areas.
In conclusion, the major challenge in improving Nagaland’s road network is maintaining roads in hilly areas. This is because the terrain makes it difficult to build and maintain roads, and the state government has limited resources to do so.