Concept:A scrupulous person is honest, careful, and follows moral rules strictly. Its antonym is someone who lacks these qualities.Explanation:The word "scrupulous" means thorough, attentive to detail, and morally upright. The opposite is "dishonest", which means not truthful or fraudulent. Options like "principled" and "ethical" are similar in meaning, not opposite. "Careless" is not the exact opposite because scrupulous also involves morality. Hence, the correct antonym is dishonest.Answer:Dishonest (Option D)