A risk budget may fund the implementation of a fallback plan, which is activated if a risk materializes. This ensures that resources are available to manage and mitigate the impact of risks on the project, aligning with proactive risk management strategies in PRINCE2. References: PRINCE2 7 Foundation Handbook and official training materials.

The first task of product-based planning in PRINCE2 is to write the Project Product Description. This description defines the project's main output, outcome, or benefit and includes the project's scope and major deliverables, forming the basis for more detailed planning. References: PRINCE2 Foundation manual, PRINCE2 official resources

The 'manage by stages' principle in PRINCE2 dictates that the end of each stage provides a control point at which the project board can review progress, reassess project viability, and decide on the next steps. This approach allows for regular monitoring and decision-making, ensuring that the project remains aligned with its objectives and within its tolerances.
PRINCE2 7 Foundation guide on the 'manage by stages' principle.

A leadership activity within a PRINCE2 project involves several responsibilities, one of which is agreeing on work packages with team managers. This agreement includes specifying the tools and techniques to be used for product delivery. This activity is crucial for ensuring clarity and mutual understanding of how work is to be conducted, facilitating effective delegation and accountability within the project team.
(PRINCE2 7 Foundation Study Guide, AXELOS)