Whitney Searched for the Last Pair of Rhinestone Earrings at the Store

Multiple Choice

Whitney searched for the last pair of rhinestone earrings at the store. Turning to her friend, she said, "If I don't go ahead and get these, I won't have them for the wedding." This is an example of the principle of

A) liking.
B) scarcity.
C) reciprocity.
D) similarity.