Unlike the buildings of the Baroque era, which were extremely ornamental and lavish in design,
Neoclassical era marked a return to buildings with simplistic and timeless designs.
Meaning: Two types of buildings are compared based on design eg. unlike
'the buildings of the Baroque era', which were extremely ornamental and lavish in design,
the buildings of the neoclassical erahad simplistic and timeless designs.
Buildings of the Baroque era are wrongly compared to Neoclassical era. Not logical.
(A)
Neoclassical era marked a return to buildings with
(B)
Neoclassical buildings having(C)
Neoclassical era had buildings with
(D) the buildings of the Neoclassical era had(E)
the buildings of the Neoclassical era havingBoth A and C suffer from erroneous comparison error. Both B and E render incompleteness (because there's no verb) to the clause and produce no meaning at all. All ABCE can be dumped right away. D is the winner