To make checkbox forms work correctly, the __ attribute must have the same data. Answer: square

To make checkbox forms work correctly, the **name** attribute must have the same data.<br /><br />When using checkboxes in HTML forms, it is important to ensure that the name attribute for each checkbox has the same value. This allows the server to identify which checkboxes were selected when the form is submitted. If the name attributes are different, the server will treat each checkbox as a separate input and will not be able to determine which ones were selected.