Answer is D.

To prevent defects by evaluate work products such as requirements, user stories, design, and
code
• To verify whether all specified requirements have been fulfilled
• To check whether the test object is complete and validate if it works as the users and other
stakeholders expect
• To build confidence in the level of quality of the test object
• To find defects and failures by reducing the level of risk of inadequate software quality
• To provide sufficient information to stakeholders to allow them to make informed decisions,
especially regarding the level of quality of the test object
• To comply with contractual, legal, or regulatory requirements or standards, and/or to verify the
test object’s compliance with such requirements or standards