Postwar science fiction stories and books were questioning the thought and culture during the Cold War. The stories were discussing how individual identity meets with the moral, political and social issues of the period. Set in near future, in dystopia or in technologically advanced world, the authors tried to make people think about the realities of possible threats and dangers of a society.
In comparison with that, beat generation of the postwar era was not about the preservation or quest of the societal values. By introducing alternatives, such as sexual liberation, psychedelic drugs and spiritual quest the authors were rejecting values.
The correct answer is the third option