The correct option is C Planting of trees
Water scarcity is the lack of availability of water resources to meet the increasing demand for water. It may be caused due to following reasons:
∙ Less rainfall leads to a reduction in the groundwater level, which inturn affects the farmers who depend on groundwater for watering their crops.
∙ Less than 1% of the total freshwater on the Earth is accessible to us. Polluting these freshwater sources further reduces the amount of consumable freshwater.
∙ Poor farming practices like repetitive cropping culture results in the loss of soil moisture and nutrients. This can result in an increased demand for water.