Which of the following is an obligation of registered financial professionals regarding client data?

Registered financial professionals have a fundamental obligation to protect and maintain the confidentiality of client information. This responsibility is rooted in legal, ethical, and professional standards that govern financial practices. Protecting client data ensures that the sensitive financial information of clients remains secure from unauthorized access and potential misuse. It builds trust between the professional and their clients, which is paramount in maintaining a good business relationship.

Maintaining confidentiality goes beyond mere compliance; it involves implementing appropriate measures to secure data, such as using secure systems for data storage, restricting access to sensitive information, and training staff on data protection protocols. This obligation is crucial in protecting clients' financial interests and upholding the integrity of the financial profession at large.

The other options do not align with professional standards or ethical responsibilities. Sharing client data with unauthorized parties compromises confidentiality, allowing public access to all financial records violates privacy principles, and disregarding client inquiries about data security undermines the trust and communication essential in a professional relationship.