Final answer:
The statement that a milestone is a specific point in the project plan marking the completion of a significant task is true. Milestones measure progress and provide a reference point for evaluating project health.
Step-by-step explanation:
A milestone in project management is indeed a specific point in a project plan that marks the completion of a major task or a set of tasks that have a significant impact on the project's progress. Therefore, the answer to the question is A) True.
Milestones are essential components in project planning and management because they serve as indicators of significant achievements within the project lifecycle. They are both measurable and motivational tools that help project teams and stakeholders gauge progress and align their efforts towards predetermined objectives. The establishment of milestones involves deciding on the criteria for determining when a significant phase or task has been completed. More importantly, milestones do not only signal the completion of tasks but also facilitate a review of the project's health and trajectory. This evaluative aspect enables managers and team members to make informed decisions about future project activities, making certain that the efforts are aligned with the initial goals and objectives.