In a Classic Study on Reciprocity, Participants Interacted with Either

Multiple Choice

In a classic study on reciprocity, participants interacted with either a rude or a friendly confederate who, in one condition, did an unsolicited favor for some of the participants. At the end of the study, this confederate then asked the participant to buy some raffle tickets from him. In which condition were the participants most likely to purchase raffle tickets?

A) In the conditions in which the confederate did an unsolicited favor for the participant.
B) In the conditions in which the confederate was friendly to the participant.
C) In the condition in which the confederate was friendly and did an unsolicited favor for the participant.
D) In the condition in which the confederate was unfriendly and did not do an unsolicited favor for the participant.