Which privacy concept is primarily concerned with how data is stored and managed over time?

The correct choice focuses on the concept of data retention, which specifically addresses how data is stored, the duration it is retained, and the policies governing its management over time. This principle is crucial for establishing guidelines that dictate how long information can be held, the types of data that should be archived, and when it should be deleted. Effective data retention policies ensure compliance with legal and regulatory requirements while also mitigating risks associated with excessive data storage.

In contrast, data security involves the protection of data from unauthorized access and breaches, which is distinct from how that data is managed over time. Data breach notification pertains to the process followed after a data breach has occurred, emphasizing the necessity to inform affected individuals and regulatory bodies, rather than addressing data management practices. Data sharing relates to the dissemination of data between parties but does not encompass the broader aspects of data lifecycle management that retention addresses.