While many of the dinosaur fossils found recently in northeast China seem to provide evidence of the kinship between dinosaurs and birds, the wealth of enigmatic fossils seem more likely at this stage that they will inflame debates over the origin of birds rather than settle them.
(A) seem more likely at this stage that they will inflame debates over the origin of birds rather than
(B) seem more likely that it will inflame debates over the origin of birds at this stage than
(C) seems more likely to inflame debates on the origin of birds at this stage rather than
(D) seems more likely at this stage to inflame debates over the origin of birds than to
(E) seems more likely that it will inflame debates on the origin of birds at this stage than to
Subject, wealth is singular hence A & B are out within no time. Left are C, D & E.
There might be confusion amongst them but if you see closely to D, it sounds perfect as the use of preposition (to) is perfectly placed and sounds parallel.