How to use this self-assessmentType your answer in the relevant box.
Press the tab key. If you are correct, a pop-up alert box will tell you so. If
the pop-up alert box does not appear, then you must try again and repeat the
process. When you have the correct answer, clear the typing from the box
and then press the tab key. Please note that it is important
to clear the typing from the box before pressing the tab key; otherwise, you
will keep repeating the pop-up alert box.