...ask your professors, get a book and/or scour the journals, that's how
I'm trying to get MY degree...
(While the amazing powers of the internet are invaluable to enhancing
communication in this day, I still don't think it's possible to complete
your education in a quality manner by asking others the answers to your
"test questions" or whatever they may be. This is not learning, it is a
bizarre illness known as "mental diarrhea" when you take answers offered
here in response to your regurgitated questions and then smear them on
paper as a "response"...sorry, but you asked for it!)
;-)