The Green Revolution was a movement aimed at increasing agricultural productivity, particularly in developing countries. The primary goal of the Green Revolution was to enhance the production of food grains. Option 1, cash crops, refers to crops that are grown for commercial purposes, such as cotton or sugarcane, and this was not the main focus of the Green Revolution. Option 2, pulses, are a type of legume that includes beans and lentils, and while they are important for nutrition, they were not the main target of the Green Revolution. Similarly, option 4, minor millets, are a type of grain that is less widely cultivated compared to major food grains like rice and wheat. Therefore, option 3, foodgrains, is the correct answer as it accurately reflects the primary objective of the Green Revolution.