March,
definitly, and you should listen to some march pieces.
Decipherability means to determine the meaning of. And as it has suffixed to 'able', i.e. Decipherable, it means the one which could be determined like that
I believe this is stating not about the physical arrows, but his skill set. So therefore I think it's option 2 "<span>Oedipus was highly skilled in many things"</span><span />
First question: A; Second question: C