The correct answer is option 1, 1960. The Green Revolution was a period of significant agricultural advancements that took place between the 1940s and the 1960s. It was aimed at increasing agricultural productivity and addressing issues of hunger and food shortage. The Green Revolution primarily focused on the introduction of high-yield varieties of crops such as wheat and rice, along with the use of modern farming techniques and technologies. This led to a substantial increase in crop production in countries like India, Mexico, and the Philippines. The Green Revolution played a crucial role in alleviating hunger and poverty in many regions of the world, and its initial implementation can be traced back to the early 1960s.