The answer would be (3) simile
The Lonely Crowd book analyzed the 1950s as a culture of conformity.
The Lonely Crowd is a 1950 sociological analysiswriten by three different people all together, David Riesman, Nathan Glazer, and Reuel Denney. dentify and analyze three principal cultural types: tradition-directed, inner-directed, and other-directed. They describe the evolution of society from a tradition-directed culture, one that moved in a direction defined by preceding generations.
Hi ! if the bolded word here is nonchalant then your answer should be laid back
hope i helped :)