Answer: Option (D)
Step-by-step explanation:
Act utilitarianism is referred to as or known as the utilitarian theory of ethics that tends to state that an individual's act at times is perceived to be morally right only if it produces or cultivate best possible outcome or result in that specific circumstance or situation. Jeremy Bentham, Henry Sidgwick and John Stuart Mill are some of the Classical utilitarians that defines happiness as pleasure.