What term describes an element of a project that requires additional resources to resolve?

The term that describes an element of a project requiring additional resources to resolve is "escalation." Escalation occurs when a project manager identifies an issue that cannot be resolved with the current resources or support at their level and must involve higher management or additional resources to address the problem effectively. This process is crucial in project management as it helps ensure that significant issues are prioritized and appropriately handled by those who can allocate more resources or make necessary decisions.

Other terms like "issue," "challenge," and "concern" refer to different aspects of project management. An "issue" is a broader term that signifies any problem that arises in the course of a project but does not inherently suggest the need for additional resources. A "challenge" typically describes a difficult task or hurdle that requires effort and skills to overcome, rather than specifically needing more resources. A "concern" indicates a worry or apprehension regarding a particular aspect of the project, but it does not imply that additional resources are necessary to resolve it. Hence, "escalation" is the most accurate term for an element of a project that requires elevated intervention to allocate more resources.