In which year was there maximum difference between water requirements and actual or projected supplies?

Solution

Difference in per capita water requirements and the actual or projected supplies in the year :

1994 = $$913-680=233$$

2011 = $$1862-1906=-44$$

2021 = $$2224-1906=318$$ [MAX]

1991 = $$722-545=177$$

=> Ans - (C)

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