Definition: A "default option" is a choice that is automatically selected unless you choose something different. It’s like the standard setting that happens if you don’t make another choice.
"Fall back on the default": To rely on the default option when no other choice is made.
"Set as default": To change a setting so that it becomes the default option.
A "default option" is a choice that is automatically selected unless you pick something else. It is important in many areas, especially in technology and decision-making.