In a Recent Telemarketing Marketing Research Field Experiment, Researchers Showed

In a recent telemarketing marketing research field experiment, researchers showed that following a request for a large amount of money , etc. (up to six requests if necessary) , is more effective than a single request for a donation of an unspecified amount. This is an example of what social influence technique?

A) Multiple-deescalating-requests technique
B) Even-a-penny technique
C) Foot-in-the-door technique
D) Door-in-the-face technique
E) Low-ball technique