One of the important theories of moral development was proposed by

Lawrence Kohlberg proposed a major theory of moral development.

Erich Fromm (B) was a social psychologist and psychoanalyst, not the author of this theory.

Daniel Goleman (C) is known for emotional intelligence, a different field.

Benjamin Bloom (D) framed the taxonomy of educational objectives, not moral development.

Kohlberg described three levels, pre-conventional, conventional and post-conventional, in six stages.

Kohlberg built on Jean Piaget's earlier work on the moral judgment of the child.