Why Does Krakoff Discuss Erikson's Theory of the Eight Stages

Why does Krakoff discuss Erikson's theory of the eight stages of human psychological development?

A) To argue that we need to confront our unconscious motivations if we are going to develop ways of relating to the natural world that avoid doing further damage to the environment.
B) To suggest that just as individuals need different virtues and ways of thinking at different stages of their lives, humans as a species need different virtues and ways of thinking at different stages of our social and technological development.
C) To introduce a ninth stage of human development that arises only when humans as a species gain enough power to significantly alter the entire Earth and intervene in the environment.
D) To contrast the development of an individual person's psychology with society's development of social, political, and economic institutions.