Final answer:
In project management, a project audit takes place during the closure phase, which is the final stage of the project lifecycle. Option 4 is correct.
Step-by-step explanation:
A project audit is typically conducted during the closure phase of a project. This phase is when the project team conducts a final review to ensure that all aspects of the project have been completed satisfactorily, lessons learned are documented, and the project deliverables are formally handed over.
The closure phase follows the implementation phase, where the actual product is manufactured or the prototype is built, and precedes the post-implementation review which evaluates the project's success after it has been deployed in the real world.
A good design process includes several steps, and the last one is generally to implement the design. Before this, there might be steps such as refining the design and testing and evaluating it. Once implementation occurs, this signals the transition from the design phase to the more tangible phases of production and usage, where the project's outcomes become operational.