A project manager has just completed the planning of a project, but cannot start the project execution until granted permission from the project sponsor. This is an example of which of the following a

Stakeholder analysis is the process of identifying project stakeholders and analyzing their influence and interest, not a decision point to start a new phase.

Risk assessment identifies and evaluates potential project risks, which is an input to project planning, not a formal approval process to transition phases.

An audit review is a formal examination of project activities or documents to determine if they comply with policies, processes, and standards, typically conducted during or after phases, but not primarily as the Go/No-Go decision for phase transition.

A phase gate, also known as a stage gate or kill point, is a review at the end of a phase in which a decision is made to continue to the next phase, defer, or terminate the project. Requiring sponsor permission to proceed from planning to execution is a classic example of a phase gate review to ensure all criteria for advancing are met.