Concept:An antonym is a word with the opposite meaning. Vilify means to speak badly about someone, so its opposite is to praise.Explanation:The word "Vilify" means to criticize or speak about someone in a harsh, abusive manner (बदनाम करना). The opposite of this is "Commend", which means to praise or express approval (प्रशंसा करना). All the other options—Malign, Slur, and Defame—are synonyms of Vilify; they all involve damaging someone's reputation. Therefore, the correct antonym is Commend.Answer:Option A: Commend