What Does Radio Button Mean?
A radio button is an element of the graphical user interface (GUI) which allows a user to select a single item from a predefined list of options.Radio buttons are often arranged in a group of at least two options. They take the form of a hollow circle which represents a "deselected" state and a circle with a dot inside for a selected state.
A user may choose only a single option or radio button among the set or group.