A new system (application) is developed for the marketing department.

Awhite box testinvolves testing the internal structure and code of an application, requiring access to its source code. The stakeholders’ demand for anindependent white box testindicates their primary concern is thequality of the source code(C). This type of testing, conducted by an independent party, ensures the code is well-structured, secure, and free of defects that could lead to vulnerabilities or inefficiencies.

Capacity (A):Refers to the system’s ability to handle load, typically tested via performance or stress testing, not white box testing.

Performance (B):Focuses on speed and responsiveness, evaluated through performance testing, not white box testing.

Functionality (D):Is tested via black box testing, which focuses on inputs and outputs without examining the code.

White box testing is a technical process often aligned withSDLCquality assurance practices, ensuring code reliability and maintainability, which is critical for stakeholders concerned about long-term system integrity.