The correct answer is D. Test Closure. This is because test closure is the final activity of the test process, in which the test team evaluates the test results, reports the outcomes, identifies the lessons learned, and hands over the testware and the defect reports to the maintenance team. The Defect Accepted and Deferred report is a document that lists the defects that have been accepted by the stakeholders and deferred to be fixed in future releases. By handing over this report to the maintenance team, the test team is performing the test closure activity. Test Closure - ISTQB not-for-profit association References: Certified Tester Advanced Level Test Manager (CTAL-TM) - ISTQB not-for-profit association, ISTQB Test Manager Certification - ISTQB Exams Worldwide - ISTQB Official Registration, Test Closure - ISTQB not-for-profit association