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The question is about the longest National Highway route in India among the given options.
Option 1, Agra-Mumbai, is not the longest. The approximate distance between Agra and Mumbai is around 1,200 km.
Option 2, Chennai-Thane, is also not the longest. The distance between these two cities is approximately 1,335 km.
Option 3, Kolkata-Hajira, is the correct answer as it is the longest out of all four options. This highway route has a distance of about 2,013 km. This makes it the longest among the choices listed.
Option 4, Pune-Machilipatnam, doesn`t count as the longest either. It spans around 1,104 km.
In conclusion, the Kolkata-Hajira route is the longest considering the fact that it has the longest distance in kilometers among all these options.