Final answer:
Yes, Kerry James Marshall has played a significant role in increasing the representation of Black artists and their work in museums.
Step-by-step explanation:
Kerry James Marshall has played a significant role in increasing the representation of Black artists and their work in museums. His art reflects the African American experience and incorporates social commentary, which brings diversity to museum exhibitions. For example, Marshall's use of very black figures and his focus on African American life and culture challenge the traditional narratives found in museums. While there is still work to be done to make museums more diverse, Marshall's contributions have been significant.