Kellogg's Is Offering Free DVDs to Consumers Who Collect Five

Multiple Choice

Kellogg's is offering free DVDs to consumers who collect five official Collection certificates from the back panels of specially marked packages of Kellogg's cereals and then mail them with the official order form.Within 90 days,these consumers will receive the movie of their choice.A(n) _____ will occur when a movie fan mails in his or her certificates for a movie.

A) synergy
B) sublimation
C) exchange
D) entropy
E) reciprocity