Answer:
C). Americans were conformists and lacked the inner resources to lead truly independent lives.
Step-by-step explanation:
David Riesman's book "The Lonely Crowd" exemplifies a culturally directed sociological analysis. The description that best describes and illustrates the thesis of the book would be option C among the given options. As the title itself displays a sociological character that the book carries and emphasizes the idea that Americans were conformists and had a deficiency of inner resources in order to lead true independent lives of their own. The author suggests that inner-directed people are more successful. Therefore, the answer is option C.