Final answer:
During the performance phase of a project, it is necessary to monitor and control the progress of the project work in order to ensure that it stays on track and any issues are addressed promptly.
Step-by-step explanation:
During the performance phase of a project, it is indeed necessary to monitor and control the progress of the project work. This phase involves executing the project plan and completing the project deliverables. Monitoring and controlling help ensure that the project is on track, and any deviations or issues can be addressed promptly.
For instance, if a project involves building a bridge, monitoring and controlling the progress would involve regularly checking that the construction work is being carried out as planned, and any problems or delays are identified and resolved.
Monitoring and controlling helps in keeping the project within the allocated resources, time schedule and quality standards, and provides an opportunity to make adjustments and take corrective action to meet the project's objectives.