Brain › General KnowledgeSudden discovery or advance, especially in knowledge. (noun)breatkthrubreakthroughbrakethroughbreakthoughAnswerThe correct answer is B) breakthrough.More General Knowledge questionsVery bright or distinguished. (adjective)Commercial or mercantile activity. (noun)Depositing in the ground. (verb)Which 1992 movie is this audio clip from?Which 2000 movie is this audio clip from?Which 1995 movie is this audio clip from?Play Brain · Practice