The correct answer is Two. Explanation & Key Takeaways: • The Green Revolution in India experienced success in two phases: • Phase 1 (1967-1972):- • Introduction of high-yielding variety (HYV) seeds for wheat • Increased production of wheat, particularly in Punjab, Haryana, and Uttar Pradesh • Transformation of India from a food-deficient to a food-sufficient nation • Phase 2 (1972-1984):- • Expansion of HYV technology to other crops, such as rice, maize, and millet • Wider adoption of HYV seeds across different regions of India • Further increase in agricultural production and food security Related Concepts: • Green Revolution:- • It was a period of agricultural modernization that began in the 1960s and transformed agriculture in India. • The Green Revolution involved the introduction of new technologies, such as high-yielding variety (HYV) seeds, chemical fertilizers, and pesticides, as well as the expansion of irrigation systems. • These technologies led to a dramatic increase in agricultural production, particularly for wheat and rice, and helped to India achieve food self-sufficiency.