The main means of transport in Jammu and Kashmir is

Railways
Roadways
Airways
Waterways

The correct answer is: B. Roadways

Roadways are the main means of transport in Jammu and Kashmir. The state has a well-developed road network, with a total length of over 20,000 kilometers. The national highway NH-1A connects Jammu with Srinagar, and the national highway NH-44 connects Srinagar with Leh. There are also a number of state highways and major district roads.

The state government has been working to improve the road infrastructure in Jammu and Kashmir. In recent years, the government has constructed a number of new roads, including the Jammu-Srinagar Expressway and the Srinagar-Leh Highway. The government has also been working to improve the condition of existing roads.

The development of the road network has had a positive impact on the economy of Jammu and Kashmir. It has made it easier for people to travel within the state, and it has also made it easier for businesses to transport goods and services. The development of the road network has also made it easier for tourists to visit the state.

The main means of transport in Jammu and Kashmir is roadways. This is because the state has a well-developed road network, with a total length of over 20,000 kilometers. The national highway NH-1A connects Jammu with Srinagar, and the national highway NH-44 connects Srinagar with Leh. There are also a number of state highways and major district roads.

The state government has been working to improve the road infrastructure in Jammu and Kashmir. In recent years, the government has constructed a number of new roads, including the Jammu-Srinagar Expressway and the Srinagar-Leh Highway. The government has also been working to improve the condition of existing roads.

The development of the road network has had a positive impact on the economy of Jammu and Kashmir. It has made it easier for people to travel within the state, and it has also made it easier for businesses to transport goods and services. The development of the road network has also made it easier for tourists to visit the state.

The other options are not as important as roadways in Jammu and Kashmir. Railways are not well-developed in the state, and there are only a few airports. Waterways are also not a major means of transport in Jammu and Kashmir.