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Delhi to Chennai link is known by the name of __________.
A. Golden Quadrilateral
B. North-South corridor
C. East-West corridor
D. Sher Shah Suri Marg

Answer
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Hint: India has one of the largest road networks in the world, with a total of about 56 lakh km. Roadways have preceded railways in India. In view of the ease with which roadways can be built and maintained, they have an edge over Railways.

Complete step-by-step answer:
The growing importance of road transport over railways can be attributed to the following reasons: The construction cost of roads is much lower than that of railway lines. Roads can traverse comparatively more dissected and undulating topography. Road transport is economical in transportation over short distances for a few persons and a relatively smaller amount of goods. The cost of loading and unloading is much lower with road transport since it also provides door-to-door service. Road transport is also used as a link to other modes of transport such as between railway stations, airports, and seaports.
In India, roads are classified into six categories according to their capacity; these are Golden Quadrilateral Super Highways, National Highways, State Highways, District roads, Border roads, and other roads. The government has launched a major road development project linking Delhi-Kolkata-Chennai-Mumbai by six-lane Super Highways which is the Golden Quadrilateral Super Highways. The East-West Corridor connecting Silchar in Assam and Porbandar in Gujarat and North-South corridor linking Srinagar in Jammu & Kashmir and Kanyakumari in Tamil Nadu is part of this project.

Thus, option (A) is correct.

Note: To reduce the time and distance between the megacities of India is the major objective of these Super Highways. The National Highway Authority of India (NHAI) implemented these highway projects.