With Howells，James，and Mark Twain active on the literary scene，____ became the major trend in American literature in the seventies and eighties of the 19th century．

With Howells，James，and Mark Twain active on the literary scene，____ became the major trend in American literature in the seventies and eighties of the 19th century．

A.Sentimentalism

B.Romanticism

C.Realism

D.Naturalism

正确答案是C