A project has passed a phase-gate, and the new phase is ready to begin. Which of the following is the MOST appropriate method to communicate the transition to team?

A kickoff meeting is the standard method for launching the overall project at its outset, not for communicating subsequent phase-specific transitions and individual responsibilities.

One-on-one meetings enable the project manager to personally communicate each team member's specific assignments, deliverables, and expectations within the new phase, ensuring individual clarity and alignment. This personalized approach is especially important during phase transitions where roles and responsibilities may shift across team members. It also creates a private space for team members to ask questions or surface concerns specific to their contribution.

Voice conferencing is a less formal, synchronous channel that lacks the personalized, structured engagement required to communicate individual roles and expectations during a formal phase transition.

Instant messaging is an informal channel suited for quick status updates, not for delivering structured, formal communication about a project phase transition.