Final answer:
True, according to utilitarianism, the morality of an action can change if the consequences change since utilitarianism is a consequentialist theory emphasizing outcomes over the intrinsic nature of actions.
Step-by-step explanation:
According to utilitarianism, the morality of an action is determined by its consequences. This means that an action is considered moral if it produces the greatest happiness for the greatest number of people. Classic utilitarians like Jeremy Bentham and John Stuart Mill emphasized that the results of an action are what matter, not the intent or the act itself. Therefore, it is indeed true that the morality of a particular action can change over time if the consequence changes. Utilitarianism assesses actions by the happiness they produce and not based on a set of unchanging moral absolutes. As circumstances and outcomes evolve, so too can the moral judgements ascribed to a particular act within a utilitarian framework.