Which of the following best defines Safe Sleep mode?

Safe Sleep mode is a power-saving feature designed to protect the system's current state while allowing the computer to enter a low-power state. In Safe Sleep mode, the computer copies the contents of its RAM to the storage drive before entering sleep mode. This ensures that if the computer loses power, either due to the battery running out or being unplugged, the session can be fully restored to where it left off when powered back on. This differentiates Safe Sleep from regular sleep mode, where only the RAM maintains the current session without saving it to storage.

The other potential options do not accurately describe Safe Sleep mode. While completely powering off the computer (the first option) would not save the current session, performing backups while resting (the third option) is unrelated to Safe Sleep since it deals with data integrity rather than state preservation. Additionally, reducing power usage by limiting functionality (the fourth option) is more indicative of a standard power-saving mode rather than the specific action of preserving data to enable a full state recovery.