The passage is primarily concerned with problems of ______.

A．the realism of Nevelson's work
B．the unique qualities of Nevelson's style
C．a distinction between sculpture and painting
D．the extent of critical approval of Nevelson's work

A．I ) because ______.A. Nevelson's sculptures are difficult to understandB. few of the artists prominent in the twentieth century have been sculptorsC. women sculptors have found it especially difficult to be accepted and recognized as major artistsD. many art critics have favored painting over sculpture in writing about developments in the art world