B, cleanest. i suppose it is the most positive of all the options.
Gullible unselfish practical romantic
This shows a clever use of irony.
It is rather ironic that Faustus would say he would rule Germany one day and then meet the man who is actually ruling over it. The emperor is obviously very powerful if he has managed to take control over an entire country, which is something Faustus hasn't done.
Many is the adjective, and if it's wrong then there is no adjective.
an adjective is a describing word.