How do program scope changes typically impact project schedules?

Program scope changes generally lead to alterations in project schedules due to the additional work or modifications required. When the scope of a project expands or shifts, it often necessitates more resources, changes in tasks, or additional time to complete the project. This can lead to delays as the project team adjusts to the new requirements and may also result in increased costs due to the need for additional labor, materials, or extended timelines.

In project management, scope changes usually require thorough evaluation and justification, as they can significantly impact the overall project delivery. Adjustments in schedule could mean that existing tasks will take longer to complete, and the project timeline may need to be revised to accommodate these changes. Therefore, recognizing that scope changes can cause delays and increase costs is critical for effective project management.

The other options, while plausible in certain contexts, do not capture the inherent complexities and typical consequences of scope changes on project schedules effectively. For instance, reduction of project deadlines is often unrealistic when the scope expands, simplifying planning does not align with the typical challenges posed by scope changes, and it is unlikely that scope changes would have no effect on costs, as they often necessitate additional resources or time, both of which incur costs.