What is utilitarianism?
A consequentialist approach that evaluates actions by their outcomes; choose the action that maximizes happiness or welfare for the greatest number.
What is deontology?
An ethical theory based on duties, rules, and universal principles; morality depends on following the right rule, regardless of outcomes.
What is virtue ethics?
An approach focusing on character and virtues; the right action is what a virtuous person would habitually do.
How do these theories differ in a moral dilemma?
Utilitarianism weighs overall good; deontology follows duties; virtue ethics looks at character; they can yield different judgments for the same situation.