Answer: E. preconventional
Step-by-step explanation:
According to Kohlberg’s Structural Theory of Moral Development, the Pre-conventional level is a point in moral development where humans (especially babies) are mostly concerned with what external standards think of the actions they engage in so as not to get punished.
The emphasis here is to be avoid punishment as well as to be self-serving which is what Gary is doing at work when he acts in his own best interests and only follows rules to avoid being fired (punished).