Which form of learning—classical conditioning, instrumental conditioning, observational learning, or cognitive learning—

best explains the following consumption behaviors:

(a) buying a six-pack of Gatorade,

(b) preferring to purchase jeans at a Diesel Store,

(c) buying an e-reader for the first time,

(d) buying a new car, and

(e) switching from one cell phone service to another? Explain your choices.