What primary responsibility does the broker of record have concerning compliance with rules and regulations for all individuals employed by the brokerage?

The primary responsibility of the broker of record concerning compliance with rules and regulations for all individuals employed by the brokerage is to ensure that all employed individuals, including unregistered assistants, follow regulatory standards. This is a crucial aspect of the broker of record's role as they are responsible for maintaining a high level of professionalism and adherence to regulations within the brokerage.

Options A, C, and D do not accurately represent the primary responsibility of the broker of record in ensuring compliance with rules and regulations for all individuals employed by the brokerage. Option A discusses the qualifications of a broker of record, option C pertains to the designation and tenure of the broker of record, and option D focuses on the direct supervision of salespersons, which is not the primary responsibility in this context.