A "backup option" is an additional choice or plan that you have in case your original choice or plan does not work out. It is like a spare or alternative option that you can rely on if needed.
Sentences with «backup option»
They are a popular backup option for schools, shelters, hospitals, sewage treatment plants and other mission - critical facilities in the case of a storm or natural disaster. (entrepreneur.com)
There's a new backup option in the Good Lock settings and a dedicated user feedback section, further emphasizing the value placed on giving users what they want. (androidauthority.com)
He has clearly gained some experience on loan and he may not be 1st team quality but would be a very good backup option. (justarsenal.com)