According to the PMBOK® Guide, as project activities are executed, various data points are collected to monitor progress. The framework distinguishes between three specific levels of performance reporting:

Work Performance Data: The raw observations and measurements identified during activities being performed to carry out the project work. Examples include actual cost, actual duration, and percent of work physically completed.

Work Performance Information: This is the data collected from various controlling processes, analyzed in context, and integrated based on relationships across areas. For instance, while " Work Performance Data " might say a task took 10 hours, " Work Performance Information " would clarify that those 10 hours represent a 2-hour variance from the original plan.

Routine Collection: This information is routinely collected and processed during the Monitoring and Controlling Process Group. It allows the project manager to communicate the status of the project to stakeholders and provides the foundation for decision-making.

Comparison with Other Options:

Communication management activities (A): This refers to the general tasks involved in the Manage Communications process. While these activities occur, they are not the specific " metric " or " data " routinely collected to measure project performance.

Change requests (B): While change requests are common as a project progresses, they are an output of identifying variances or improvements. They are not the information itself being collected from the activities, but rather a reaction to that information.

Configuration verification and audit (C): This is a specific activity within Configuration Management (part of Integrated Change Control) used to ensure that the project ' s product configuration is correct and that the product meets its functional requirements. It is an occasional audit rather than a routine data collection of activity progress.