There are 3 different answers based on 3 different interpretations of the question. I think Tim has correctly identified the intent of the original author of the notation. But the additional clues from OP's edit and comment suggest (the possibility) that he really is looking for a broader perspective on "how to do the left hand", although he has not expressed this very clearly.
I thought about commenting on the question, but it seemed more appropriate to ask the group. I'm not so certain that Marc Perry didn't successfully read between the lines.
One possible solution is for all answers to preface a statement of assumptions: "If this is a simple exercise, then ...", "If you want to know more about choosing left-hand patterns for chordal accompaniment, then ...", "If your keyboard has the option, you may want to use ...". Or such?
Should we vtc as unclear to spare the answerers from warring about it?