Answer:
D. Agriculture
Step-by-step explanation:
Freshwater refers to any water that occur naturally, but this does not include seawater and brackish water. Examples of fresh water are water in rivers, glaciers, ice sheets, underground (groundwater), icebergs, and among others. The main feature of freshwater is that its dissolved salt and other dissolved solids concentration are low
Freshwater is different from potable water which is water that safe to use to prepare food and drinking water. Human activities and natural occurrence like erosion can pollute freshwater. Therefore, it not save to drink freshwater or use it to prepare food without first treating it.
The uses to which freshwater is put to include sanitation system, drinking and crop irrigation in agriculture. Throughout the world, the major use of water is crop irrigation in agriculture as it agriculture accounts for about 70% of used.
Therefore, the main use of freshwater is Agriculture.