The statement that explains how Justinian’s Code was a turning point in the regulation of the Byzantine Empire is:
**Justinian’s Code codified Roman law and allowed Justinian to have greater control of his empire.**
Justinian's Code systematized and organized existing Roman laws, which helped to unify the legal framework of the empire and provided a clearer set of laws for the administration of justice. This consolidation of law was pivotal in consolidating Justinian's authority and governance over the Byzantine Empire.