Acceptance testing primarily focuses on verifying whether a system meets agreed-upon requirements and satisfies the business and user needs. Quality attributes (also known as non-functional requirements) play a vital role in defining the completeness of the acceptance testing process.

Let’s analyze the options:

ii. Functional suitability — directly relates to whether the system provides the correct functions as per business needs. Essential in acceptance testing.

v. Security — ensures that the system is protected against unauthorized access or data breaches. Often critical for business stakeholders.

vii. Maintainability — reflects how easily the system can be modified. Relevant in acceptance if maintainability requirements are part of contractual criteria.

Thus, Option B (ii, v, vii) contains three attributes that are very relevant for acceptance testing.

Other options:

A includes vi (cognitive ability), which is not a standard ISO 25010 quality attribute.

C includes i (commercializability) — not a system quality attribute defined in ISO 25010.

D includes iii (viability) — more of a business or market consideration, not system testability.

Answer: B. ii, v and vii