Which statement is true about VM snapshots?

The statement that VM snapshots can be used to revert back to a previous state of the VM is indeed true. Snapshots serve as a point-in-time representation of a virtual machine's state, including its configuration, memory, and disk data. When a snapshot is taken, it captures the current state, allowing users to later restore the VM to that exact point if needed. This is especially useful in scenarios where changes need to be tested, software installations are performed, or troubleshooting is necessary. If an issue arises after making changes, the snapshot feature allows for an easy rollback to a prior state, thus ensuring data integrity and minimizing downtime.

While it's important to remember that snapshots do have implications for performance and storage, particularly if they are retained for extended periods, their primary function revolves around state management and data recovery, making option B the most accurate statement regarding VM snapshots.