The correct answer is: b) Cable cars.
Cable cars are a type of aerial tramway that consists of a series of suspended gondolas or cabins that travel between two or more stations. They are often used in mountainous areas to provide access to remote areas or to transport people over steep terrain.
Cable cars can be a popular tourist attraction, as they offer stunning views of the surrounding area. They can also be a convenient way to travel between different parts of a city or town.
In Nagaland, cable cars could be used to connect the different villages and towns that are located in the mountains. This would make it easier for tourists to visit these areas and experience the unique culture and scenery of Nagaland.
The other options are not as well-suited for boosting tourism in Nagaland.
Monorails are a type of rail transport that uses a single rail to guide the train. They are often used in urban areas to provide a high-speed transportation system. However, monorails are not as common in rural areas, such as Nagaland.
High-speed rail is a type of rail transport that operates at speeds of over 200 kilometers per hour. It is often used to connect major cities. However, high-speed rail is not a realistic option for Nagaland, as it would be very expensive to build and operate.
Inland waterways are a network of rivers, canals, and other waterways that can be used for transportation. They are often used in rural areas to transport goods and people. However, inland waterways are not as well-suited for tourism, as they do not offer the same level of scenic views as cable cars.