Beneatha's dream is to become a doctor. What obstacles could defer her dream in A Raisin in the Sun?

This is an intriguing question.  Hansberry shows Beneatha
to be the embodiment of the modern woman of the time period.  Questioning the social
construction of what it means to be both a woman and one of color, Beneatha is shown to
be an individual who is constantly utilizing her freedom to explore different notions of
who she is.  At the same time, Hansberry does a very skilled job of bringing out the
realistic implications of this pursuit.  There is the monetary dimension.  Beneatha's
search for identity is an expensive one, as Walter notes.  Given the family's financial
condition, this is something that will pose challenges and problems for them and can be
as something that will bring out a fundamental level of challenge to her dreams as she
needs a part of the insurance money that is coming to the family.  I think that another
aspect of challenge or potential deferral would come from social inertia that a woman of
color of the time period must face.  In many ways, Beneatha is battling the social
dimensions of class, race, and gender in her own life and the convergence of these
forces can be seen as potential obstacles to the achievement of her own dreams, in this
case of becoming a doctor.