Which is a purpose of the change theme?

The purpose of the Change theme in PRINCE2® is to identify, assess, and control any potential and approved changes to baselined products. This theme provides the mechanisms to manage and control changes, which may affect the project’s agreed-upon scope, products, timescales, or costs. It ensures that all changes are assessed for their impact and only implemented with appropriate approvals.References: PRINCE2® 7 Foundation resources and materials.