The pop art movement criticized traditional art for its lack of

The pop art movement criticized traditional art for its lack of Expression

   Lack of immediacy and expression

Explanation:  Pop Art came out in the 1950's as a reflection of the mass culture of young people, where inspirations were found in the images of mass culture and thus posed a challenge for the traditional culture. Mass media of pop culture were comics, commercials, fanzines, etc. One of the main goals of pop art was to erase the boundary between so-called higher levels of art and so-called low culture. The inspiration for art can be found in any source. While abstract traditional artists dealt with the inner state of the soul, pop art artists sought to portray the causes of these states in advertising media, comics, in something that is receptive and understandable to everyone. Thus they equalized the external and internal causes, advocating the thesis that everything was interconnected, and had direct, immediate access to all social phenomena and problems. Simply put, the pop art artists were more direct, more expressive, talking about topics that existed even earlier, but  in a more direct way.