The Project Management Body of Knowledge (PMBOK) suggests that risks associated with resources should be addressed in the resource management plan. In this case, the risk is that the materials may not be printed on time due to other higher priority projects. Therefore, the project manager should include a risk response in the resource management plan to mitigate this risk. This could involve strategies such as contingency planning, alternative scheduling, or negotiating priority with the printing services. References: PMBOK Guide, 6th Edition, Section 9.5.2.2: Plan Risk Responses.