An organization's file server has been virtualized to reduce costs. Which of the following types of backups would be MOST appropriate for the particular file server?

A snapshot captures the state of a virtual machine at a specific point in time, primarily used for quick rollback capabilities or temporary testing, not as a primary long-term backup type for data retention and cost-effective recovery of a file server's changing data.

Full backups copy all selected data every time they run, resulting in high storage consumption and long backup times, which is generally inefficient for a file server with frequent data changes and contradicts the goal of reducing costs.

Incremental backups only copy data that has changed since the previous backup (full or incremental), significantly reducing the amount of data transferred and stored. This approach is highly efficient for frequently updated file servers, lowering storage costs and backup windows, which is crucial for a virtualized environment focused on cost reduction.

Differential backups copy all data that has changed since the last full backup, meaning their size grows with each subsequent backup until the next full backup, making them potentially larger and less efficient than incremental backups for daily operations on a busy file server.