You are the business analyst for your organization and you are completing the verify requirements process. There are eight characteristics each requirements should have: cohesive, complete, consistent

Functional describes a category or type of requirement (as opposed to non-functional requirements such as performance or security constraints), not a quality attribute that a requirement must possess. The eight characteristics define how a requirement should be written and evaluated, while 'functional' describes what subject area the requirement addresses.

Modifiable is one of the eight valid characteristics, meaning a requirement must be structured so it can be changed without disrupting other requirements in the document.

Unambiguous is one of the eight valid characteristics, meaning a requirement must have exactly one possible interpretation to avoid confusion during implementation.

Testable is one of the eight valid characteristics, meaning there must be a verifiable, objective method to confirm that the requirement has been satisfied.