Final answer:
To create a group of radio buttons, the correct control is a 'button group' which ensures only one radio button can be selected at a time within that group.
Step-by-step explanation:
To create a group of radio buttons in a user interface, the control you would use is a button group. This control allows multiple radio buttons to be grouped together, ensuring that only one button can be selected at a time within that group, which is the standard behavior for radio buttons. The 'button group' acts as a container for the radio buttons and handles the logic required to deselect other buttons in the group when one is selected, maintaining the rule that only one radio button can be active at a time.