Answer:
Option D, Challenging prevailing ideas
Step-by-step explanation:
Han is trying to emphasize how his article is written with better literature understanding as compared to the previous works of other author.
He is clearly talking about his extra efforts that he has put into the research work which makes his work superior and different from others.
He on the second hand also want other people to understand his point of view and thus in a way he challenges the previous studies and researches
Hence, option D is correct