Which of the following encompasses threshing, drying, milling, and grading?

The correct choice relates to the processes involved in the management of crops after they have been harvested. Post-harvest activities encompass various essential operations that occur after harvesting to ensure the quality and viability of the agricultural produce. Threshing separates grains from chaff; drying removes moisture to prevent spoilage; milling transforms grains into flour or other forms; and grading sorts the produce based on quality, size, and other factors.

These processes are crucial for maintaining the quality of the harvest, reducing losses, and adding value to the crops before they reach the market or processing stages. Understanding these activities is vital for anyone involved in agricultural extension and communication as they directly impact food supply chains and economic viability for farmers.

In contrast, production activities refer to the growing and cultivation processes that take place before harvesting, while harvesting activities focus specifically on the collection of the crop itself. Thus, post-harvest activities represent a distinct phase that includes crucial steps like threshing, drying, milling, and grading, making it the most accurate response to the question.