In Rawls' theory,the highest or final period in the development of morals is morality of ______.

A) principles
B) association
C) authority
D) common interests

Rawls argues that the highest or final period in the development of morals is morality of principles, characterized by the recognition that each person has an equal right to basic liberties, and that social and economic inequalities should be arranged to benefit the least advantaged. This is based on the idea of the original position, where individuals would come up with principles of justice behind a veil of ignorance, not knowing their own position or abilities in society, and would choose principles that are fair for all. This morality of principles is seen as the culmination of moral development because it recognizes and respects the equal worth and dignity of each person.