Which of the following would BEST facilitate the maintenance of data classification requirements?

Periodic audits systematically review whether data is correctly classified according to policy and if associated controls are effectively applied. This regular verification process is crucial for identifying misclassifications, policy deviations, and control gaps, allowing for timely corrective actions and ensuring the ongoing accuracy and effectiveness of the data classification program.

Assigning a data custodian is important for accountability and initial classification, but without audits, there's no independent verification of consistent maintenance.

Implementing technical controls helps enforce classification, but audits are needed to ensure those controls are correctly configured and applied based on accurate, maintained classification.

Establishing a Data Loss Prevention (DLP) solution helps prevent unauthorized data exfiltration based on classification, but it does not directly maintain the classification scheme itself or verify its accuracy over time.