Choose the correct answer. Parents should teach their children to save drinkable ... .

“Water” is an uncountable noun: it takes no “a” and no plural. It is used in a general sense here (drinkable water in general), so no “the” either: “to save drinkable water”.

Manba: UZBMB namunaviy test topshiriqlari (2022, mutaxassislik)