Answer:
Social system morality.
Explanation:
Kohlberg developed a new model (three levels with two stages each) because he thought Piaget's was simplistic.
The social system morality stage is characterised as fulfilling social duties in order to keep the social system going and the moral jugdment as avoiding critisism by a respected authority.
In this case, Rebecca is fulfilling her social duties (not breaking the law (a social convention)) whilst avoiding the critisism. Hence, she is in the social system morality stage.
