In all likelihood, participants in Milgram's obedience experiments (conducted in the 1960s and 1970s) were willing to administer increasingly severe shocks to a confederate learnerbecause they were concerned that the experimenter would be disappointed or perhaps even angry with them. Such concerns reflect the power of ________ to induce obedience to authority.
a. informational social influenceb. the reciprocity normc. mindless conformityd. normative social influence