Amongst Irish-American playwrights of the early 20th Century, her work stood out

Amongst Irish-American playwrights of the early 20th Century, her work stood out as a(n) , not so much because of its striking originality but because other contemporaneous works tended to be on most social issues. Her plays, by contrast, allowed the audience to come to its own conclusions, a technique that foreshadowed much of 20th century theatre.

A.exemplar
B.precursor
C.anomaly

D.unyielding
E.dogmatic
F.reticent