What term refers to a cloud's ability to manage data and systems across various organizations?

The correct term that refers to a cloud's ability to manage data and systems across various organizations is elasticity. Elasticity in cloud computing describes the capability of a cloud service to efficiently scale resources up or down according to demand. This flexibility allows organizations to manage and allocate their data and applications dynamically, responding to varying workloads without compromising performance or incurring unnecessary costs.

In a multi-tenant environment, where multiple organizations share the same resources, elasticity ensures that each organization can use the resources it needs while maintaining system integrity and performance. This characteristic is crucial for businesses looking to adapt to changing demands in real time.

Other terms in the options do not accurately convey this particular capability. Virtualization focuses on creating virtual versions of physical resources, which is crucial but does not specifically relate to managing resources across different organizations. Legal requirements deal with compliance and regulations concerning data protection and privacy, rather than resource management. Clock synchronization pertains to coordinating time across systems to ensure accuracy in logging and process execution, which, while important for certain operations, is not related to the management of data and systems across various organizations.