The correct option is C Out of 75 UP districts, 34 'over-exploited' for groundwater
The correct headline is Option C. The headline is precise, accurate and stands by the format of an appropriate headline. Option A is incorrect due to the use of a 'be verb', 'are' in the headline. Option B is precise but only provides incomplete information on the data provided. Option D is incorrect due to the use of the 'article', 'the' in the headline.