In order to compare a current projects quality to that of a previously completed project, a project manager should use which of the following techniques?

Process improvement focuses on optimizing the methods and procedures within a project rather than comparing the project's overall quality against others.

Quality metrics are specific measures used to track quality attributes, but they are tools used within a comparison rather than the comparison technique itself.

Benchmarking involves comparing the performance or practices of a project to those of other projects, either internal or external, to identify best practices, measure performance, and find ways to improve. When a project manager needs to compare a current project's quality against previously completed projects, benchmarking provides the necessary comparative analysis.

Cost-benefit analysis is a technique used to evaluate the financial feasibility of a project or a decision by comparing the costs of an action against its benefits.