If every requirement can be checked by a cost-effective process, then SRS is…

Correct answer: Verifiable

• Definition: A requirement is verifiable when there exists a feasible, cost-effective process (such as a test, inspection, or analysis) to determine whether the requirement has been satisfied.

• Why this fits the question: The phrase "can be checked by a cost-effective process" directly describes verifiability — the ability to confirm requirement satisfaction using practical verification methods.

• Why the other terms are not correct:

  • Traceable: Means requirements can be linked to their source or to related requirements/tests; it does not guarantee a cost-effective check.

  • Modifiable: Refers to how easily the SRS can be changed and maintained, not to whether requirements can be verified.

  • Complete: Means all necessary requirements are specified; completeness does not imply each requirement has a cost-effective verification method.