The main criticism that Carol Gilligan had regarding Lawrence Kohlberg's theory of moral development is option b) Kohlberg's theory puts justice at the heart of morality. Gilligan argued that Kohlberg's theory neglected the importance of care and the relational aspects of morality. She believed that women's moral development focused more on caring and interpersonal relationships, rather than just justice. Gilligan suggested that a care perspective should be integrated into Kohlberg's theory to provide a more comprehensive understanding of moral development.