Answer: A
Correct answer: Punjab, Haryana and western Uttar Pradesh
The Green Revolution succeeded most strikingly in Punjab, Haryana and western Uttar Pradesh, which became the country’s grain surplus region and turned India from an importer of food into a self-sufficient producer. It rested on a package rather than a single change: high-yielding dwarf varieties of wheat and rice, chemical fertilisers, pesticides, assured irrigation, mechanisation and price support through procurement. The dwarf wheat came from Norman Borlaug’s work in Mexico, and M. S. Swaminathan led its adaptation in India from the mid-1960s. The regional concentration was itself a consequence of the package. Assured canal and tubewell irrigation was essential, and only those states had it at the necessary scale, which is why the benefits were uneven and regional disparities widened. Its costs are now well documented: falling water tables, soil degradation, loss of crop diversity, and the wheat-rice cycle displacing pulses and millets. The White Revolution in milk and the Blue Revolution in fisheries followed the same model.