Final answer:
Morality, according to Mill's theory, is about promoting happiness for the greatest number of people.
Step-by-step explanation:
In terms of Mill's theory, morality can be understood as the promotion of happiness or the greatest good for the greatest number of people. Mill's theory, known as classical utilitarianism, states that actions should be judged based on their consequences and their impact on overall happiness. According to Mill, moral rules are not absolute and are subject to exceptions if they lead to greater happiness.