When David is asked to describe his best friend Josh, he responds: "Josh is very friendly, pretty intelligent, and a really nice guy. He seems laid-back, but he actually works hard at keeping up with his college classes. He's a lot of fun because he's always ready to try something new." David's description of his friend's personality would be most consistent with which of the following approaches to personality?
a. trait
b. humanistic
c. psychoanalytic
d. social cognitive