Read the passage and answer the question that follows. Given the precarious…

Read the passage and answer the question that follows. Given the precarious condition of its ground and surface water resources (rivers, streams, lakes, wetlands and reservoirs), India could be a water-scarce country in the next 40 years. With 1,486 cubic metres (~1.5 million litres) of water available per person per annum, India falls in the water-stressed category. A dip below 1,000 cubic metres per person per annum will push it into the water-scarce category. The manner of water consumption also compounds the problem. Central Ground Water Board (CGWB) statistics show that the indiscriminate use of groundwater turned 4% of the total 7,089 assessed units in the country critical in 2022, while 14% were assessed as over-exploited. The situation was worse in 2017, when 17% of the units were over-exploited. Various recharge and conservation efforts have borne fruit, but the number of such units remains high in states such as Punjab, Rajasthan, Haryana, Delhi, Tamil Nadu and Karnataka. In India, 87% of groundwater is extracted for irrigation, and experts say excess withdrawal throughout the year may be the biggest reason for depletion, as recharge primarily happens during the monsoon. On the other hand, encroachment on water bodies and the discharge of untreated wastewater into rivers and streams have reduced surface-water resources. In 2022, approximately how many units assessed by the CGWB were found to be over-exploited?