Which of the following is the most relevant reason a DPO would develop a data inventory?

A Data Protection Officer (DPO) develops a data inventory primarily to understand what personal data an organization collects, processes, and stores. This knowledge is crucial for determining the potential impact in the event of a data breach. By knowing exactly what data assets exist, their sensitivity, and where they are located, the DPO can accurately assess the severity of a breach, identify affected individuals, and fulfill regulatory notification requirements. While a data inventory can indirectly help with storage management or data retention policies, its most critical function from a data protection and privacy perspective is risk assessment and incident response planning. It does not directly automate data deduplication.