Jane has implemented an array of four servers to accomplish one specific task. This is BEST known as which of the following?

Clustering combines multiple physical servers so they operate as a unified system to perform a specific role, such as running a database or providing high availability for an application. The servers in a cluster share the workload and can provide failover if one node fails. This is distinct from load balancing, which is about distributing traffic, because clustering also implies shared state and coordinated operation among the nodes for one defined task.

RAID (Redundant Array of Independent Disks) refers to combining multiple storage drives, not servers, to provide redundancy or performance.

Load balancing distributes incoming network requests across multiple servers for performance and availability but does not describe servers dedicated collectively to a single specific task.

Virtualization is the technique of running multiple virtual machines on a single physical host, which is unrelated to grouping multiple physical servers.