Likely, there are a number of related ideas that lead you to your main questions in Div II. As you try to articulate them in a contract, it can help to map them out – to see the relationships among ideas. Concept maps help us do just that – and there are many online tools that help you create a concept map.
Try to create a concept map of the major ideas that inspire you. Telling the story of the map might lead you to a clear articulation of your Concentration. You might find that there are a number of ideas that you really want to focus on and some more far flung ideas that you might explore if you have time.