Which mode allows a computer to quickly resume operation while using minimal power?

The mode that allows a computer to quickly resume operation while using minimal power is Sleep Mode. In this mode, the system maintains the current session in memory and conserves energy by powering down most components, such as the display and hard drive, while keeping the RAM active. This enables a quick start-up, as the user can return to their work almost immediately without needing to boot up the operating system or reload applications.

Sleep Mode is particularly beneficial for users who may step away from their computer for short periods, as it strikes a balance between maintaining a minimal power footprint and providing rapid access to the existing session.