Final answer:
Most people operate at the postconventional level of moral reasoning in adulthood according to Lawrence Kohlberg's theory of moral development.
Step-by-step explanation:
According to Lawrence Kohlberg's theory of moral development, most people operate at the postconventional level of moral reasoning in adulthood. At this stage, people begin to think of morality in abstract terms and recognize that legality and morality do not always align. However, it is important to note that the development of postconventional moral reasoning varies among individuals and is influenced by cultural factors.