After twelve years of attending the same schools, Holly and Amy chose to attend colleges in different states. Holly remembered Amy as a shy but friendly girl who rarely took risks, and so Holly was surprised when her friend sent an e-mail describing the thrill of skydiving. Holly's surprise occurred because Amy's behaviors don't match the ________________ that Holly had observed in high school.

A) peak experiences
B) personality traits
C) archetypes
D) defense mechanisms