Which quality assurance tool and technique confirms the implementation of approved change requests, corrective actions, defect repairs, and preventive actions?

A.
Quality checklists

B.
Quality Metrics

C.
Quality audits

D.
Process analysis

Explanation:
A quality Audit is an independent evaluation, inspection or review of a project’s quality assurance system to improve quality performance of a project
The audits can take place at scheduled or random intervals.

The result of a quality audit (eg lesson learned) are important for the current project as well as for later projects or other parts of the organisation.