The correct setting to configure is 'Sleep/suspend'. This power-saving state allows a computer to quickly resume full-power operation (typically within a few seconds) when a user wants to start working again. The machine enters a low-power state, saving the current state of the system in RAM. This minimizes power consumption while allowing the user to resume work quickly, without waiting for the system to boot up as it would from a shut down or hibernate state. Changing settings such as 'Hibernate' or 'Turn on fast startup' would involve either a longer resume time or shutting down the system entirely, which does not meet the user's requirement for immediate resumption. 'Adjusting to High Performance' would not minimize power consumption, and 'Choosing what closing the lid does' could pertain to various actions, not specifically to entering sleep mode.