Use your imagination and creativity. This is an assessment tool that could be used at or near the beginning of the term or a unit. It has no right or wrong to it. It is meant to inspire their imagination and spur creativity, pure and simple.
The student is asked to answer the question, "What is creativity?" on the back of the drawing to help justify what it is that he or she has just drawn. Taken together, you can get a better grasp on assessing their potential.
Above all... HAVE FUN!