According to your textbook's treatment of Kohlberg's theory of moral development, a focus on rewards and punishment in respect to a moral dilemma is characteristic of
A. children who haven't grasped the principle of object constancy.
B. adolescents who have reached the formal operational stage of moral development.
C. adolescents who have reached the conventional level of moral development.
D. children who haven't reached the conventional stage of moral development.