I believe Interrater Reliability.
Abstract art is popular because it has a purpose in this world both for the artist and the viewer. Many people collect abstract paintings to beautify their surroundings, as an investment, or to update their lives with contemporary culture. ... Abstract art also covers a broad spectrum of painting styles. Abstract art can also be made with many materials and on many surfaces. It can be used in concert with representational art or completely abstract. Artists creating it often focus on other visual qualities like color, form, texture, scale and more in their nonobjective work.
The answer is c....the whole purpose was to keep them as segregated as possible
