A team is working on a user privilege and access control system. A business analyst (BA) selects use cases as the technique for requirements specification. What is the relationship between use cases "

Validate is a requirements relationship used to confirm that a requirement meets a defined condition or criterion, not to describe a functional dependency between two related use cases.

In BABOK formal requirements relationships, a derive relationship indicates that one requirement or use case is logically derived from another, meaning it cannot be fully defined or executed without the other. 'Create a role' derives from 'Find a role' because any role creation process must incorporate a search to validate that the role does not already exist. This functional dependency at a high formality level is formally expressed as a derive relationship.

Necessity is not a standard formal use case relationship in BABOK for expressing the logical dependency between use case functionality in a high-formality model.

Satisfy is a requirements relationship where an implementation model element fulfills a requirement, and is not applicable to describing the functional derivation between two use cases within the same specification.