Radio buttons allow users to select one option from a collective set.
Radio buttons should be used when displaying a small list of assets, typically 7 options or less. If you require more than 7 options, consider using a select field instead.
Radio button Group
The most common usage of a radio button is within a radio button group. By wrapping the radio buttons in a radio button group, all the options are now a part of the same set.
A radio card displays a collection of radio buttons, or a radio button group, wrapped in a card. A radio card should be used to display radio buttons when there is a large amount of content to be shown.
A radio button can display as preselected or unselected, by default.