"Human beings have cognitive faculties that are superior to those of other animals, and once humans become aware of these, they cannot be made happy by anything that does not involve gratification of these faculties.
Which one of the following statements, if true, most calls into question the view above?
a) Certain animals -- dolphins and chimpanzees, for example -- appear to be capable of rational communication.
b) Many people familiar both with intellectual stimulation and with physical pleasures enjoy the latter more.
c) Someone who never experienced classical music as a child will usually prefer popular music as an adult.
d) Many people who are serious athletes consider themselves to be happy.
e) Many people who are serious athletes love gourmet food.