Answer:
Ralph Ellison's novel Invisible Man provides a good illustration of the concept of double consciousness developed by Du Bois because it portrays the protagonist's struggle to reconcile his African American identity with the dominant white culture of America. The protagonist is constantly aware of the contradiction between how he sees himself and how others see him, leading to a sense of "twoness" or "double consciousness" that is at the core of Du Bois' theory. The novel depicts the protagonist's journey towards self-discovery and the realization that his identity is not fixed or predetermined, but rather constantly evolving and influenced by external factors. Through this portrayal, the novel highlights the complex and multifaceted nature of identity in a society marked by racial divisions and inequalities.