Which of the following is a reason for disciplinary action against a licensee?

False advertising is a valid reason for disciplinary action against a licensee because it constitutes a breach of ethical standards and legal regulations governing professional conduct. Licensing bodies expect individuals to represent their services truthfully and transparently. Misleading clients or the public through false claims can undermine the integrity of the profession, deceive consumers, and create an unfair competitive advantage. Such actions can lead to erosion of trust in licensed professionals and can result in legal consequences or loss of license.

In contrast, praises by clients, committing acts of social service, and demonstrating good moral character are positive actions that would not warrant disciplinary measures. These reflect a professional's good reputation, community involvement, and adherence to ethical practices, which are essential for maintaining the credibility of the profession. Therefore, false advertising stands out as the clear reason for possible disciplinary action.