Which of the following must the Board track regarding licensees?

The Board must track the contact details and license information of licensees to ensure effective communication and oversight of their activities. These details are essential for managing renewals, resolving any issues or concerns that may arise, and maintaining an accurate record of licensed professionals.

Having up-to-date contact information allows the Board to notify licensees of any changes in laws or regulations, inform them of renewals, and communicate any disciplinary actions if necessary. License information, including the status of their licenses, is fundamental for regulatory compliance and to assure the public that professionals practicing are properly licensed.

Options that suggest tracking only a limited aspect, such as just business addresses, license numbers, or disciplinary history, fail to encompass the full scope of what is required for effective oversight and communication with licensees. Therefore, option C is the most comprehensive and reflects the Board's responsibility to track both contact details and complete license information.