Felicia wants to deploy an encryption solution that will protect files in motion as they are copied between file shares as well as at rest, and also needs it to support granular, per-user security. What type of solution should she select?

File encryption meets all of the needs described. Full-disk encryption is easier to deploy and manage but does not protect individual files in motion and does not effectively support multiuser scenarios. Partition-level encryption has the same challenges, albeit at a partition rather than full-disk level. Record-level encryption is typically used in databases to protect individual records or entries.