Final answer:
A manager seeking "the greatest good for the greatest number" follows the principles of Utilitarianism. This consequentialist approach is centered on actions that promote the greatest happiness for most people, distinguishing it from deontology, virtue ethics, and egoism.
Step-by-step explanation:
A manager who makes ethical decisions on the basis of seeking "the greatest good for the greatest number" is following the principles of Utilitarianism. This approach, which is a form of consequentialist ethics, is focused on outcomes or consequences to determine the morality of an action. The greatest happiness principle is central to this approach, emphasizing actions that produce the greatest amount of pleasure or happiness for the most people. In contrast, Deontology is rule-based and does not consider the consequences in the same way, while Virtue Ethics centers on character and the development of virtuous habits. Egoism, particularly ethical egoism, would make decisions based on the individual's own self-interest rather than that of the majority.