The most direct contribution to the Green Revolution was the widespread diffusion of industrial agriculture. The Option C is correct.
This diffusion of industrial agriculture tells about the transformative period in agriculture which began in the mid-20th century. This saw the adoption of modern farming techniques, such as the use of high-yielding crop varieties, synthetic fertilizers and advanced irrigation systems leading to a significant increase in agricultural productivity.
This shift towards industrial agriculture was important in addressing food scarcity issues and improving crop yields. It helped to meet the growing food demand of the global population particularly in developing countries and alleviating hunger and malnutrition to a considerable extent.
The full question is:
Which of these MOST directly contributed to the Green Revolution?
The domestication of plants and animals
The signing of international agreements
A widespread diffusion of industrial agriculture
The invention of crop rotation
A decline in the global birthrate