The term  used by writer gertrude stein to describe those left deeply disillusioned by world war ia. lost generationb. baby boomerc. beat generationd. tea party 

a. Lost Generation

Gertrude Stein (1874-1946) was an American writer, famous for her literary and artistic judgments, and her home in Paris that was a salon for the leading artists and writers of the period between WW I and II. Many of those who attended her home were middle-age American writers, mostly expatriated, whose values were no longer relevant in the postwar era. Many of them found themselves disoriented and deeply disillusioned by World War I and its outcome. And Stein started to call them "Lost Generation".

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