Your psychology professor finishes up her lecture and asks if anyone has any questions. No one raises a hand. You were hopelessly confused by the lecture but assume that everyone else must have understood it since no one asked anything. Later, you find out that your friends in the class were also confused, but they thought they were the only ones. Social psychologists would call this confusion a consequence of a. diffusion of responsibility. b. representativeness. c. availability heuristic. d. pluralistic ignorance.