Answer:
Violin typically provides the harmonic underpinning for other melodic instruments but can carry the principal melody on their own as well.
Because he's not smart. No it isn't a hard desicion because he isn't smart
Answer:
You didn't include the picture, but after some searching I think that 'The Barbarians' is most likely the piece of art, but again, not 100% sure :)
My answer would be B, because studying is the better way know more deeper about how to start working, so if you want an employ and you have a degree it's easiest than when you don't have it, now there are people that not even studied and they are rich, but this doesnt apply for all the cases.