Answer:
The correct response is Option C: The forces that contributed to the complacent prosperity of the fifties had ironically contributed to the sense of upheaval and unprecedented counterculture that helped define the sixties and early seventies.
Step-by-step explanation:
In the 1960s there arose a strong sense of a counterculture, which was an anti-establishment movement that was emerged primarily in parts of Europe and North America from the mid-1960s to the mid-1970s. It was influenced by the Civil Rights Movement and its continued pressure for change and also the War in Vietnam helped to fuel opposition to the status quo and the sense that the dominant powers were out for their own interests at the expense of the younger generations. There were also tensions regarding human sexuality, women's rights, as generational divisions over traditional modes of authority. Younger generations experimented with psychoactive drugs and began to question and resist the system.