The correct answer is All are correct. Explanation & Key Takeaways: • The Green Revolution is referred to as the process of increasing agricultural production by incorporating modern tools and techniques. • The Green Revolution spread over the period from1967/68 to 1977/78 and changed India’s status from a food-deficient country to one of the world's leading agricultural nations. • The components of the Green Revolution- • HYV Seeds- These are seeds are of better quality than normal quality seeds. Mr Borlaugh had been able to develop a seed which was raised in its nature of nutrients supplied to the different parts of wheat plant-against the leaves, stem and in favour of the grain. This made the plant dwarf and the grain heavier- resulting in high yield. These seeds were non-photosynthetic, hence non-dependent on sun rays for targeted yields. • The Chemical Fertilisers- The level of nutrients HYV seeds required could not be supplied with the traditional composites. That is why a high concentration fertiliser was required which could be given to the targeted seed only, the option was the use of chemical fertilisers - urea, phosphate, potash. • The irrigation- For controlled growth of crops and adequate dilution of fertilisers, a controlled means of water supply was required. • Chemical Herbicides and Weedicides- To prevent costlier inputs of fertilisers not being consumed by the herbs and the weeds in the farmlands, herbicides and weedicides were used while sowing the HYV Seeds. • Credit, Storage and Marketing- All the peripheral infrastructure were developed with the softer loans coming from the World Bank. • All are correct.