The correct answer is: B. To select single option.
A radio button is a small, round button that is used to select one option from a group of options. When a radio button is selected, it is surrounded by a circle. Only one radio button in a group can be selected at a time.
Radio buttons are often used in forms to allow users to select their preferences. For example, a form might have a group of radio buttons that allow users to select their favorite color. Only one color can be selected at a time.
Here is a brief explanation of each option:
- Option A: To select multiple options. This is not the function of a radio button. A radio button can only be used to select one option from a group of options.
- Option B: To select single option. This is the function of a radio button. A radio button can only be used to select one option from a group of options.
- Option C: To select all option. This is not the function of a radio button. A radio button can only be used to select one option from a group of options.