Correct Answer: Option A — National Highway. National Highway is correct because it is a nationally designated arterial road connecting major regions. National Highway is also specifically associated with the Union government is responsible for national-highway development and maintenance arrangements. Two additional identifying facts are that National Highway is these routes connect capitals, ports, industrial centres and border areas and National Highway is associated with route numbers identify corridors rather than road quality alone. Why the other options are incorrect: • Option B — Expressway: Expressway is an access-controlled high-speed road corridor. It is incorrect here because its separate identifying association is entry and exit are generally limited to designated interchanges. • Option C — Golden Quadrilateral: Golden Quadrilateral is a major highway network linking Delhi, Mumbai, Chennai and Kolkata. It is incorrect here because its separate identifying association is it forms a quadrilateral connecting four major metropolitan regions. • Option D — North-South and East-West Corridor: North-South and East-West Corridor is a national highway development corridor crossing India in two broad axes. It is incorrect here because its separate identifying association is the North-South axis links Srinagar with Kanyakumari. Exam Takeaway: Connect National Highway with “a nationally designated arterial road connecting major regions” and “the Union government is responsible for national-highway development and maintenance arrangements”.
