Final answer:
The statement in the question is false because it confuses ethical egoism with utilitarianism, which considers the greater good, whereas ethical egoism focuses on the individual's own best long-term interests.
Step-by-step explanation:
The concept described in the question relates to ethical egoism, which posits that acts are moral when they promote the individual's best long-term interests. However, stating that this ultimately leads to the greater good aligns more closely with Utilitarianism, a form of consequentialism.
Therefore, the statement that the ethical concept under discussion is the moral rights approach is false. The moral rights approach is more deontological, focusing on adherence to moral rights and duties rather than outcomes. Ethical egoism, as stated in the arguments a and b, indeed focuses on the individual's own good, but the idea that this automatically results in the greater good is a separate issue.