Thanks for the question! So we’re asked here for a statement with which the author would agree. (C) is directly contradicted by the passage. Take a look at lines 33-35, which says that “the articles were debated at each stage, and all 30 articles were argued passionately by delegates.” So it wasn’t relatively easy, it was hard, they had to debate a lot.
Hope this helps! Feel free to ask any other questions that you might have.