A healthcare organization deployed watsonx Assistant to handle patient inquiries. A compliance audit reveals that patient names and medical record numbers are appearing in stored conversation logs, violating HIPAA requirements. Which configuration change should the administrator make to remediate this finding?

watsonx Assistant provides a 'Mask sensitive data' (PII masking) setting in Analytics that automatically redacts personal identifiers such as names, account numbers, and other sensitive values from stored conversation logs. This allows organizations to retain useful analytics while meeting HIPAA, GDPR, and other privacy compliance requirements without disabling logging entirely. The correct answer, "Enable the 'Mask sensitive data' option in the Analytics settings to redact PII from conversation logs", directly satisfies the scenario because it aligns with watsonx Assistant's design principles and the specific capability being tested. The incorrect options ("Delete all existing logs and configure the assistant to store no analytics data going forward", "Change all user roles to Reader to limit who can view the logs", "Move the service instance to an IBM Cloud region that is exempt from logging requirements") may appear relevant but each misses a key requirement or introduces a step that is either unnecessary or belongs to a different workflow. Mastering the distinction between these approaches is essential for effective watsonx Assistant implementations and is a core focus of the Domain 5: Administration section of the certification exam.