Question

what are three common advertising techniques

Answer 1

Multi-Media, Pervasive, Intrusive. Psychological subvert shoppers impulses to save money and instead spend.
I think if you take above as your standpoint you can work out what you would use as a Dynamic Whizkid in some Advertising Agency, what type of Advertising produces the best metrics/hard cash.

Answer 2

lie

cheat

and steal

maybe