The answer is "3). It appears to have been created to mark the unification of Egypt."
It isn't 1, as the Palette of Narmer is an Egyptian artwork, not Sumerian. It isn't 2, as it doesn't feature cuneiform, but hieroglyphs. It isn't 4, as the art isn't Mesopotamian, but Egyptian.
The most unique feature of “The Ninth” was that Beethoven included chorus and vocal soloists in the final movement. He was the first major composer to do this in a symphony.
