Which of the following transport route of India is the longest?

North-South Corridor

The correct answer is Option (2) → North-South Corridor

The North–South Corridor is the longest transport route in India. It stretches from Srinagar (Jammu & Kashmir) in the north to Kanyakumari (Tamil Nadu) in the south, covering a distance of 4,076 km. This is greater than the East–West Corridor (3,640 km), the Konkan Railway (760 km), or National Waterway No. 1 (1,620 km).