Final answer:
The only consequence that matters in ethical egoism is Consequences for oneself, as this moral philosophy prioritizes the individual's self-interest in decision-making.
Step-by-step explanation:
The only consequence that matters in regards to ethical egoism is D) Consequences for oneself. Ethical egoism is a normative ethical theory that prioritizes the self-interest of an individual in ethical decision-making. Unlike consequentialism, like utilitarianism, which considers the greatest good for everyone, ethical egoism focuses solely on the action's outcome as it pertains to the individual agent's own well-being.
In ethical egoism, the morality of an action is determined by how well it serves the actor's self-interest. This is in contrast to altruistic views that consider the well-being of others or deontological ethics, which are grounded in duties irrespective of personal outcomes.