The phrase "mode option" refers to a choice or setting that allows you to select a specific way or style of doing something, usually on a device or system. Full definition
This screen is the source of information for the entire car, providing real - time engine updates, service suggestions, driving mode options, and of course, GPS and entertainment. (bakermotorcompany.com)
Also, a dark mode option will be available, which should go perfectly with OLED displays. (techtimes.com)
There are a couple of things in the software that you won't find in stock Android phones, like the Full Screen mode option in settings. (androidheadlines.com)