Unchecked AI outputs pose a significant risk because incorrect or biased results may propagate into decision- making processes. The AAIA™ Study Guide stresses that validating AI outputs for consistency, accuracy, and reasonableness is a critical responsibility of both operators and auditors.
"Auditors must verify that appropriate output validation mechanisms are in place. Failure to check outputs increases the likelihood of undetected errors influencing downstream processes or decisions." While cascading failures (C) are a consequence of unchecked outputs, B is the root issue. A and D present logistical and documentation risks but not the highest immediate impact.
Reference: ISACA Advanced in AI Audit™ (AAIA™) Study Guide, Section: "AI in Audit Processes," Subsection: "Audit Validation of AI Outputs"