Radio button
Also called: Radio, Option button
A round option in a group where exactly one can be selected; choosing one unselects the others.
Definition
Radio groups are for a few visible, mutually exclusive options. Testers check grouping, default selection, arrow-key navigation and that the whole row is tappable.
In practice
Standard, Express and Same-day shipping as radio buttons: picking Express unselects Standard and updates the total.