Which statement best summarizes the results of research on Freud's theory of humor?
a. Although a few of the minor predictions from Freud's theory are supported, most of the major predictions have not been supported.
b. Almost all of this research supports Freud's theory of humor.
c. Very few of the research findings are consistent with Freud's predictions.
d. Although many of the research findings are consistent with Freud's predictions, they are subject to alternative interpretations.