True!! It always helps to know what you're doing before you do it!
I would go with the last one- a symbol or theme that appears in stories from many different cultures. An archetype is kind of like a blueprint which authors add onto, so they carry through several cultures and stories as well as myths and legends.
They are considered a reliable source
It wouldn't matter really, but A is good. If you don't have a dictionary at hand, then do your best to pronounce it.
