Which of the following best defines "project scope"?

The definition of "project scope" refers specifically to the work required to complete the project objectives. This encompasses all the tasks, deliverables, and boundaries of what the project entails. Understanding the project scope is vital for successful project management as it lays the foundation for planning, execution, and validation of the project's success.

In defining the project scope, project managers clarify the goals and ensure that team members understand what needs to be accomplished. This clarity helps in managing stakeholder expectations and provides a clear framework within which the project operates. Moreover, a well-defined scope aids in identifying any necessary changes and controlling the project effectively, which ultimately contributes to delivering the project on time and within budget.

The other options, while related to aspects of project management, do not provide the comprehensive definition of project scope. Budget limitations and costs focus more on financial management, and resource allocation pertains to human and material resources rather than the work itself. Hence, "the work required to complete the project objectives" is the most accurate representation of what project scope encompasses.