I'm not sure if that's a part of a bike, but I would say oval since the circle is an oval shape. Correct me if I'm wrong, but I hope this helps and good luck! :D
The majority of operas were made around the Orpheus legend. The most famous of these was the earliest performance of Monteverdi's "L'Orfeo." in 1607. Nevertheless, I highly believe the answer to this is B. Orpheus.
