Final answer:
Kohlberg suggests that the sixth stage of moral reasoning is evident when an individual acts in order to uphold universal ethical principles.
Step-by-step explanation:
Kohlberg suggests that the sixth stage of moral reasoning is evident when an individual acts in order to uphold universal ethical principles. This stage, known as post-conventional morality, is the highest level of moral reasoning according to Kohlberg's theory. At this stage, individuals understand that certain principles, such as the value of a human life, override other considerations like avoiding punishment or gaining rewards.