The correct answer is the conventional stage of morality.
The conventional stage of morality is characterized by conformity to authority and laws, fixed rules and maintenance of social order. An individual in this stage of morality believes that breaking rules and laws are always wrong and warrant punishment. Since Sander believes that anyone breaking rules set by authority figures should always be punished, even when the rules are not valid and even when special circumstances are factored in, he is operating in the conventional stage of morality as defined by Kohlberg.