Final answer:
D. Ethics. Ethics refers to the standards of moral behaviour and is the field of philosophy that investigates morality. Normative ethics focuses on moral behavior and attempts to establish criteria or principles for identifying norms and standards to guide correct behavior. It explores three main approaches to normative moral theory: consequentialist, deontological, and virtue ethics.
Step-by-step explanation:
Ethics refers to the standards of moral behaviour. It is the field of philosophy that investigates morality and engages in "systematizing, defending, and recommending concepts of right and wrong behavior". Ethics is a broad study of morality and is often divided into three main areas: metaethics, normative ethics, and applied ethics. Normative ethics focuses on moral behavior and attempts to establish criteria or principles for identifying norms and standards to guide correct behavior. It explores three main approaches to normative moral theory: consequentialist, deontological, and virtue ethics.