Which option would you use with systemctl to enable a service to start during boot?

To ensure a service starts automatically during the boot process, the appropriate option to use with systemctl is "enable." This command creates the necessary symbolic links in the system's default target directory, allowing the specified service to be launched at startup.

When a service is enabled, it becomes integrated into the init system, which manages the boot sequence and controls the initialization of services. This is particularly useful for services that need to be running every time the system starts, such as network services or databases. By employing the enable command, you're prompting the system to prepare and configure that service so that it runs without requiring manual intervention after each reboot.

The other options do not fulfill the purpose of starting a service at boot. For instance, "start" would initiate the service immediately but would not ensure it runs at the next boot. "Stop" would halt a currently running service without affecting its boot configuration, and "disable" would prevent the service from starting on boot, effectively removing it from the automatic start-up sequence.