Complaints received by the Office of Emergency Communications shall be referred to which entities?

The correct answer highlights the role of the Office of Investigations and Grassroots (OIG) in handling complaints received by the Office of Emergency Communications. The OIG is critical in investigating issues that may arise, ensuring accountability and promoting transparency within the department. Additionally, Staff Services plays a supportive role in managing complaints to streamline procedures and ensure that they are addressed properly.

The focus on these entities emphasizes the importance of having dedicated offices that specialize in investigations and support services, allowing for a structured approach to complaints. It indicates a system designed to maintain integrity and responsiveness in addressing the concerns of the public or department personnel.

While other options list various offices, they do not specifically include the OIG, which is essential in dealing with such complaints, thereby making this choice the most aligned with the given function and purpose.