According to "introduction to cultural rebellion: mid-twentieth-century voices," which statement best explains why science fiction authors of the postwar period created alternative worlds as settings for their stories?

they wanted to highlight the potential negative consequences of developing atomic weapons.

they wanted to highlight the potential positive consequences of extending society to colonies on other planets.

they wanted to highlight the potential negative consequences of adopting nonconformist attitudes.

they wanted to highlight the potential positive consequences of winning the cold war.