Answer:
The correct answer is A. Egoism.
Explantion:
Moral egoism, or ethical egoism, is an ethical philosophical doctrine that states that people must have the ethical norm to act for their own interest, and that such is the only moral way of acting, however it allows optional actions help others, but with the purpose that helping us give us our own benefit by taking it as a means to achieve something beneficial for oneself. It affirms that the validity of a theory or praxis is in its direct contribution to the positive and responsible building of the self or personal development.