Radio Button
A radio button is a graphical user interface (GUI) element that allows users to select exactly one option from a mutually exclusive set of choices. It is commonly used in forms, settings dialogs, and surveys where only a single selection is permitted from multiple options. When one radio button in a group is selected, any previously selected button in that same group is automatically deselected.
Developers should use radio buttons when designing interfaces that require users to make a single, exclusive choice from a list of options, such as selecting a payment method, gender, or subscription tier. They are essential for creating intuitive forms and ensuring data integrity by preventing multiple selections where only one is valid, improving user experience and reducing errors in data submission.