D. In the world of imagination, woman were important, but in the real world they were insignificant.
Explanation:
This is the statement that best summarizes the argument that Woolf presents in "A Room of One's Own." In this text, Woolf talks about the unfair position that women have enjoyed in the world of literature. She tells us that women have often been present in literature as characters. Many male authors write about women, which means that women were important in the world of imagination. However, in the real world, women were insignificant, as their work or intelligence were not appreciated.