What is 'Critical Path Analysis' (CPA) used for?

Critical Path Analysis (CPA) is a project management tool that focuses specifically on identifying the longest stretch of dependent tasks and measuring the time required to complete them. This method allows project managers to determine the sequence of stages that, if delayed, would extend the overall duration of a project. By identifying the critical path, managers can allocate resources more effectively, optimize scheduling, and ensure that project timelines are met efficiently. The critical path highlights which tasks are essential to meet deadlines while also allowing for a better understanding of which tasks have some flexibility, known as float or slack time.

In contrast, the other options pertain to areas outside the scope of CPA. For instance, determining customer satisfaction levels involves gathering feedback and analyzing user experience, while analyzing cost efficiency in production focuses on financial metrics rather than task sequencing. Evaluating employee performance metrics assesses individuals' work output and effectiveness, which again does not relate directly to the sequential execution of project tasks. Thus, option C is the correct choice because it encapsulates the fundamental purpose of Critical Path Analysis in project management.