I think that Beneatha is a very modern character. She embodies the idea the freedom is something that is diverse and eclectic, and represents this through her different passions and temperaments. She is committed to her freedom and independence and lacks any hesitation to express it. I think that this is also where her modernity is revealed in that she doesn't quite get the fact that modern, in its own intrinsic condition, is not superior. When she is put in her place by the elders of the family, it is representative of the fact that while she does have freedom, she also grasps that there is much for her to learn. Finally, I think that she is modern because she understands the different hurdles that she must overcome in her experience of being an economically challenged woman of color.