Both PERT diagrams and Gantt charts are useful to managers concerned with:

A. establishing formal lines of authority and responsibility within an organization.
B. estimating the cost of completing a project.
C. calculating the rate of profit earned in a particular market.
D. making sure that projects are completed on time.

Gantt charts and PERT charts are both tools used in project management to coordinate task completion. However, they differ in focus and application. Gantt charts emphasize start and completion dates for individual tasks, while PERT charts focus on the events of a project and the critical path.

Gantt charts are beneficial for smaller, linear projects with sequential tasks, whereas PERT charts are more suitable for larger projects where strict adherence to time guidelines is crucial. Project managers often use both methods simultaneously to leverage the strengths of each approach.

One limitation of Gantt charts is the need to recreate the entire schedule when task scheduling changes, while PERT charts may lack clarity in individual task completion times for complex projects.

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