Which Practice Area includes the practice of developing high-level estimates to perform the work?

The correct answer is the practice area focused on Estimating. This practice area is centered around creating projections related to effort, duration, or costs necessary to complete tasks or projects. Developing high-level estimates is a crucial aspect of project planning as it helps stakeholders understand the resources required, aids in budgeting, and establishes a framework for determining the scope of work.

Estimating involves various techniques and data analysis methods to provide a reliable basis for decision-making. It is essential for project managers and teams to develop accurate estimates to effectively allocate resources and manage timelines, contributing significantly to project success.

The other practice areas serve different purposes and do not focus on the development of estimates for workload or project requirements. Monitor and Control is about overseeing project progress and ensuring it aligns with the plan; Causal Analysis and Resolution deals with identifying the root causes of problems to improve processes; and Decision Analysis and Resolution focuses on evaluating alternative solutions for decision-making. Each of these areas plays a role in project management but does not specifically involve the practice of estimation as a primary function.