Final answer:
The project time management process that calculates the number of work periods needed to complete individual activities is estimating activity durations. This ensures proper allocation of time for each task within the overall project schedule.
Step-by-step explanation:
In project time management, the process that involves calculating the number of work periods required to complete individual activities is known as estimating activity durations. This is a critical step in project planning that ensures each activity’s time allocation aligns with the overall project schedule. To accurately estimate the duration of each activity, it may involve analyzing the work to be performed, the resources that will be used, the working hours available, and any other relevant factors that could affect the time needed to complete the task.