How do you find a quote that tells who the protagonist is. The book is called Ungifted by Gordon Korman

Your denunciation of tyrants brass fronted impudence; your shout of liberty and what is the meaning of denunciation as used in this sentence? a) excessive self-assurance b) to deceive, delude, or disappoint c) a ruler who governs without restrictions d) to condemn or censure openly or publicly