which of the following is also known as the kantian tradition in ethics
Kantian ethics refers to a deontological ethical theory that is based on the notion that: "It is impossible to think of anything at all in the world, or indeed even beyond it, that could be considered good without limitation except a good will."
Kantian ethics
Kantian ethics refers to a deontological ethical theory developed by German philosopher Immanuel Kant that is based on the notion that: "It is impossible to think of anything at all in the world, or indeed even beyond it, that could be considered good without limitation except a good will." 
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Kantian ethics [SEP] Introduction
Kantian ethics refers to a deontological ethical theory developed by German philosopher Immanuel Kant that is based on the notion that: "It is impossible to think of anything at all in the world, or indeed even beyond it, that could be considered good without limitation except a good will." The theory was developed as a result of Enlightenment rationalism, stating that an action can only be good if its maxim—the principle behind it—is duty to the moral law, and arises from a sense of duty in the actor. Central to Kant's construction of the moral law is the categorical imperative, which acts on all people, regardless of their interests or desires.