The correct option is
C Irrigation is watering the land to make it ready for agriculture.
Irrigation is the application of controlled amounts of water to fields at specific intervals. It is the watering of land to make it ready for agriculture. Irrigation systems are often complex combinations of canals, channels, and hoses. Irrigation helps to grow agricultural crops,
landscapes, and revegetate disturbed soils in dry areas and during periods of low rainfall.So, the correct answer is 'C'.