Conoce, because it's in the "él" form and although Saber and Conocer both mean "to know," conocer is more similar to "to be acquainted with." While "saber" means to know facts.
Answer from: Quest
The sentence doesn’t make sense so i guess it’s incorrect (i speak spanish)
La administración no tenga ninguna idea para eliminar la corrupción. a. es necesario que b. es una vergüenza que c. es esencial que d. es importante que