True or False: The board shall disclose the identity of a person providing information if it is essential to proceedings?

The statement is true. In Arizona, the relevant legal framework allows for the disclosure of a person's identity if that information is deemed essential to a proceeding. This helps ensure fairness and transparency in the legal process, particularly when the testimony or information provided is critical to the outcome of a case. The law recognizes that in certain instances, anonymity may be necessary to protect individuals from retaliation or harm; however, if revealing the identity is crucial to the proceedings, the law prioritizes the integrity of the legal process and the necessity of truthful testimony or evidence.

The other options do not align with this principle; the necessity of disclosing identity is not limited to certain conditions, such as already known identities or requiring a court order, unless specific statutes or regulations dictate otherwise. Thus, the ability to disclose identities in essential situations affirms the legal obligation to maintain a just and effective judicial process.