In my opinion, the correct answer is <span>D. stated and restated in different forms. A theme isn't of lesser importance - on the contrary, it often forms the melodic spine of a work, e.g. a sonata or a symphony. It may recur many times throughout the work, in many different forms, with a changed tonality, another key, extended or shortened versions... </span>
expressed and repeated in various structures. A topic isn't of lesser significance unexpectedly, it frequently shapes the melodic spine of a work, e.g. a sonata or an orchestra. It might repeat commonly all through the work, in various structures, with a changed tonality, another key, broadened or abbreviated variants.
D. used an early form of written language to record the glories of the hunt. This is because prehistoric cave paintings depicted cavemen hunting animals and animals in the wild.