1) Which of the following statements about check boxes is true?   Each check box must have a unique id attribute.   The name and id attributes of each check box should be set to the same value.   Each check box is independent of the other check boxes on a page.   All of the above. 2. How can you clear a check from a Checkbox object?   set its clear property to true   set its checked property to false   set its value property to an empty string   call its blur() method 3. What property of the Radio object is used to determine if a radio button is selected?   the value property   the checked property   the selected property   the radio property 4. What property would you use to get the text that has been entered into a text area?   value   text   name   string 5. What method would you use to remove the focus from a control?   focus()   blur()   remove()   value() 6. What event occurs when the user selects a new item from a select list?   click   dblclick   change   select