Which of the Following Statements Accurately Characterizes the Period of the 1960s

Which of the following statements accurately characterizes the period of the 1960s and early 1970s?

A) Because assassinations of major American figures remained unheard of, the sixties and early seventies were decades marked by a widespread sense of calm that made citizens feel secure taking drastic social action.
B) The violence of the fifties, such as race riots and cold war conflicts fought domestically, deterred any American activism on a significant scale and cultivated a wide sense of fear and social indifference across the various classes.
C) The presidency of Richard Nixon successfully restored the American public's faith in the integrity of its leaders, thereby ushering in a period of unprecedented productivity in the sixties and early seventies.
D) The fabric of American society was more unified than ever in the sixties and early seventies, as class distinctions largely disappeared and new technology stimulated the economy and brought many different groups together.
E) 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.