The correct answer is D. All of the above.
Consumptive use of water is the amount of water that is used by a crop and not returned to the atmosphere through evapotranspiration. It is measured as the volume of water per unit area, or as the depth of water on irrigated area. Consumptive use can be supplied partly by precipitation and partly by irrigation.
Precipitation is water that falls from the sky as rain, snow, sleet, or hail. It is the primary source of water for crops in areas that receive enough rainfall. Irrigation is the application of water to crops by artificial means, such as from a well or a canal. It is used to supplement precipitation in areas that do not receive enough rainfall, or to provide water for crops that are grown during the dry season.
The consumptive use of water for a crop depends on a number of factors, including the type of crop, the climate, the soil type, and the management practices used. In general, consumptive use is higher for crops that are grown in hot, dry climates, and for crops that have a high transpiration rate.
Consumptive use of water is an important factor in water management. It is used to determine the amount of water that needs to be applied to crops, and to assess the impact of irrigation on water resources.