This question clarifies the critical regulatory role of the Principal Broker as defined under Ontario Regulation 991, Section 15.1. Every brokerage registered with RIBO must designate one person as the Principal Broker. In the Legal and Regulatory Compliance domain, the Principal Broker acts as the primary point of accountability between the regulator (RIBO) and the brokerage.

Their responsibilities include the supervision of all registered and unregistered staff to ensure that every transaction adheres to the RIB Act and the Code of Conduct. This includes overseeing the proper management of the Trust Account, ensuring that individuals do not exceed their Binding Authority, and verifying that all staff complete their mandatory Continuing Education hours. While they may delegate certain tasks to "Supervising Brokers," the Principal Broker retains ultimate responsibility for the brokerage’s compliance.

The RIBO Level 1 Blueprint expects entry-level brokers to recognize that they operate under the supervision of the Principal Broker. This hierarchical structure is a fundamental consumer protection mechanism; it ensures that there is a qualified, experienced individual overseeing the professional standards of the firm. By choosing Option C, the broker identifies that the Principal Broker's role is regulatory and ethical rather than purely commercial (A) or administrative (B). Understanding this role is essential for Professionalism, Integrity, and Ethics, as it reinforces the "Plan of Supervision" that all Level 1 licensees must follow until they achieve a higher level of registration.