Final answer:
The major component not involved in the Green Revolution's increase in food production was using more land. The focus was on improving crop yields with HRVs, better irrigation, artificial fertilizers, and pesticides, rather than expanding farmland.
Step-by-step explanation:
During the Green Revolution of the 1960's, a key component that was not a major factor for the increase in food production was B: Using more Land. The Green Revolution primarily focused on increasing crop yields through the development of high-response varieties (HRV) of essential grains like wheat and rice, the expansion of irrigation systems, the widespread use of artificial fertilizers, and the application of pesticides.
The concept of using more land was not central to these innovations; instead, they were geared towards making existing agricultural land more productive. Norman Borlaug's efforts were instrumental in this initiative, leading to significant improvements in crop yields and contributing to the prevention of the global famine that was predicted by some scientists in the late 1960s.