Kohlberg's theory of moral development outlines six stages of moral reasoning grouped into three levels: pre-conventional, conventional, and post-conventional. The document presents a moral dilemma where Nic discovers his brother Ryan plans to attend a concert against their parents' wishes. Nic struggles with whether to tell their parents. According to Kohlberg's stages, Nic could choose not to tell to avoid punishment or gain rewards from Ryan, or tell to seek social approval from his parents and appear honest. The document does not provide Nic's final decision.