CAPM Practice: Demonstrate an understanding of project management planning

Milestones are significant points or events in the project schedule that have zero duration—they mark the completion of major deliverables, phase transitions, or key decision points. Tasks (or activities) are work efforts that consume time and have a defined duration.

**Why not A:** Milestones do not consume resources — they are zero-duration points in the schedule. Tasks are the schedule elements that require resource allocation to complete the associated work effort.

**Why not C:** Milestones do not inherently require stakeholder approval, and tasks are not always completed independently. The distinction is about duration: milestones have zero duration as significant reference points, while tasks have defined durations representing actual work.

**Why not D:** Milestones can occur at any significant point in the project, not only at phase endings. They can mark key decision points, deliverable completions, or external events. Similarly, tasks occur throughout phases and are not limited to within-phase activities.