A project team submits a weekly progress report to the project manager. The project manager consolidates the same report and sends a complete progress report to the stakeholders. What is this an examp

Informal communication consists of unplanned, ad hoc exchanges such as hallway conversations or instant messages - not structured written reports.

Internal communication describes exchanges that occur within the organization, but the scenario also involves sending reports outward to stakeholders, making this label incomplete and not the best fit.

Formal communication refers to planned, structured exchanges that follow official channels and are typically documented - such as written progress reports, presentations, and status updates. The project manager consolidating team reports into a stakeholder-facing report follows a defined, documented communication structure, which meets the definition of formal communication.

Horizontal communication occurs between peers at the same organizational level, but here communication flows upward from team to PM and then outward to stakeholders, not horizontally.