The correct answer is (a).
The National Waterway-1 (NW-1) is a 1,620-km-long stretch of the river Ganga from Allahabad to Haldia. It is the longest riverine National Waterway in India. The NW-1 is a part of the National Waterways Development Project (NWDP), which is a government initiative to develop inland waterways in India.
The NW-1 is a multi-modal waterway that can be used for navigation, cargo transportation, and tourism. It is expected to boost economic activity in the region and reduce the cost of transportation.
The NW-1 is a part of the International North-South Transport Corridor (INSTC), which is a multimodal transport corridor that connects India, Iran, Afghanistan, Azerbaijan, Russia, and Central Asia. The INSTC is expected to boost trade and commerce between India and its neighboring countries.
The NW-1 is a major infrastructure project that is expected to have a significant impact on the economy of India. It is expected to create jobs, boost trade, and reduce the cost of transportation.
The other options are incorrect because they do not represent the correct stretch of the river Ganga that has been declared as National Water Way.