Question

Choose the sentence that demonstrates parallel structure.

Answer 1

B.The seminar was not interesting nor useful.   is the correct answer
  

if you thank me it means alot

Answer 2

The answer is C: The seminar was neither interesting nor useful.

 Parallel structure is a grammatical construction and a stylistic device, which are repetitions with the purpose to help the readers to understand facts, ideas and concepts. When writing a parallel structure, the same grammatical form should follow each word of the pair: The seminar was neither interesting (adjective) nor useful (adjective).