Final answer:
When a session is restored to the last saved version, it means that the session is reverted back to the state it was in when it was last saved.
Step-by-step explanation:
When a session is restored to the last saved version, it means that the session is reverted back to the state it was in when it was last saved.
This means any changes made since the last save will be lost and the session will be brought back to the state it was in at the time of the last save.
For example, if you were working on a document and accidentally made some mistakes or deleted important content, restoring the session to the last saved version would undo those changes and bring the document back to the state it was in when it was last saved.