Concept:An antonym is a word with the opposite meaning. The correct antonym must be a real word in English.Explanation:The word "Justice" means fairness and moral rightness.Its opposite is "Injustice", which means lack of justice or unfairness.The other options – Disjustice, Illjustice, Unjustice – are not standard English words and are incorrect.Only "Injustice" is a valid and commonly used antonym.Answer:Option A (Injustice)