Hello there! The correct answer is B.
The French monarchy and army worked together to conquer large amounts of land throughout the European continent, and they ruled them with an iron fist. Any hint at rebellion was instantly quelled. This was why the French king was able to defy the Pope and made his own decisions for the Catholics in France and it's conquered territories. He believed that he was so powerful that he was even superior and independent of the Pope.
I hope this answer helped you out!