What happens when a user clicks on a radio button in a form?

When a user clicks on a radio button in a form, only one option from a group is selected. Radio buttons are designed as a part of a group where users can choose only one option at a time. This is particularly important in scenarios where a single choice is required, such as selecting a preferred method of contact or determining a payment option. When an individual radio button is clicked, any previously selected option within that same group is automatically deselected, ensuring that only one remains active. This behavior makes radio buttons an effective user interface element for allowing exclusive selections among multiple options.