What does a project budget estimate?

A project budget estimates costs and financial resources throughout the project lifecycle. This budget plays a crucial role in project management as it provides a financial framework for all project activities, ensuring that all expenditures are accounted for and that the project remains financially viable. It encompasses various cost components, including labor, materials, equipment, and overhead, enabling project managers to allocate resources effectively and manage cash flow over the project's duration. By establishing a clear budget, project managers can monitor spending and make informed decisions about resource allocation, which is essential for keeping the project on track and within financial constraints.

The other options do not accurately represent what a project budget is designed to do. While project team roles, timelines, and scope are critical aspects of project management, they fall under different categories from financial resources, which a budget specifically focuses on.