17: One of Nancy's professors requires her to write an essay favoring
  additional tuition increases for the spring.  Despite his education and
  the fact the he required her to write the essay, research on the
  fundamental attribution error suggests that the professor is likely to
  infer

  B: that because Nancy was required to write the essay, it could not
    possibly reflect her real opinions

    Incorrect.
Research on the fundamental attribution error has shown that even when people know that the causes for a behavior are situational, they still overestimate dispositional factors.  So the professor's belief that Nancy could not believe what she wrote, because she was assigned to do so would contradict research on the fundamental attribution error.  The professor would probably believe that Nancy actually believed what she wrote.