Final answer:
The Green Revolution included breeding superior grains, using machinery, and focusing on single crops to increase productivity, while the use of pesticides was also widespread to protect these crops. The correct option is a.
Step-by-step explanation:
The Green Revolution was an agricultural movement that significantly increased productivity through various methods. These methods included a) breeding superior types of grains, which were high-yielding and often disease-resistant, b) use of machinery to mechanize farming processes, and c) emphasis on single crops to maximize yield. Conversely, avoidance of pesticides was not a part of the Green Revolution; in fact, the use of synthetic pesticides was common to protect these high-yield crops from pests and diseases. The revolution was characterized by the development of high-response varieties of essential crops like wheat and rice, expansion of irrigation, increased use of artificial fertilisers, and the deployment of synthetic pesticides to control plant diseases. Genomics has further expanded the capabilities of agriculture by generating new hybrid strains and improving disease resistance, thus continuing the legacy of increasing agricultural productivity.