Final answer:
At the post-conventional stage of Kohlberg's moral development, the reasoning for not cheating would be based on personal beliefs about right and wrong, rather than fear of punishment or blind adherence to rules.
Step-by-step explanation:
The question refers to Lawrence Kohlberg's theory of moral development, specifically the post-conventional stage. If you are at this stage and facing a dilemma like whether or not to cheat on a test, your reasoning should reflect abstract principles rather than fear of consequences or adherence to rules. Therefore, the answer that aligns with post-conventional reasoning is (c) "I'd better not do it because I personally believe that cheating is wrong." This stage of moral development involves a personal moral philosophy that goes beyond rules and laws, often taking into consideration universal ethical principles and the distinction between right and wrong as determined by individual's core values.