The board may suspend, revoke, or refuse to issue a license due to addiction to what substances?

The correct answer highlights that the board has the authority to take action such as suspending, revoking, or refusing to issue a license due to addiction related to intoxicating liquors or drugs. This is significant as it underscores the importance of maintaining public safety and professional integrity within the cosmetology field.

Addiction to intoxicating liquors or drugs can impair judgment, physical ability, and overall professionalism, which can directly affect client safety and care in a salon or spa setting. Therefore, the board has regulations in place to ensure that individuals in the profession are accountable for their wellbeing and that they uphold the standards required to provide safe services to clients.

The other options represent valid concerns regarding addiction, but the phrasing of the correct response focuses specifically on intoxicating liquors or drugs as a recognized basis for disciplinary action by the board. This is in line with the legal framework established for governing licensure and ensuring that all licensed professionals remain fit to practice in a manner that prioritizes the health and safety of the public.