Who did socialists say would be resented and hated by the exploited classes?According to the writings of many socialists during the Industrial...

The only possible answer to this question is
C.

The term "bourgeoisie" is one used by Karl Marx.  He
used the term to refer to the class of people who owned the means of production.  These
would be people like factory owners.  One of the basic tenets of Marxism is that the
bourgeoisie exploits the working class.  This exploitation gives rise to conflict
between the two classes.

None of the other answers can be
right.  The proletariat is the working class and will not hate itself.  Hatred of the
aristocracy and clergy belongs to a different age.  It goes more with the rise of
democracy when the common people were (as in the French Revolution) demanding that they
get more power and that the groups like the aristocracy and clergy give up the
privileges they had previously enjoyed.