Final answer:
Without additional context, it is not possible to determine the number of licensed brokers in an advisory commission.
Step-by-step explanation:
To determine how many members of the advisory commission are licensed brokers, we would need additional context or information. This information could be provided by the bylaws of the commission, a list of members, or relevant regulatory guidelines that specify the qualifications of commission members. Without this specific information, it is not possible to accurately answer the question.