Answer:
Jim and Huck are basing their opinion of all royalty on fake kings.
Step-by-step explanation:
Mark Twain's The Adventures of Huckleberry Finn tells the story of a young boy named Huck who is always on the lookout for adventure and even escaped from the home he was at. Leaving school and the society he thinks is restricting him from living the free-spirited life he wanted, he sailed along the Mississippi River and had adventures with Jim, a slave man and other characters he encountered.
One such encounter is with the duke and the king who were just common swindlers. They had gone and 'robbed' a whole town which led to the given conversation between Jim and Huck. And when Jim asked him why it didn't bother him much about the way the cheating duo acted, Huck implied that "all kings is mostly rapscallions, as fur as I can make out." Though satirical, this reply and the acceptance of it by Jim showed how Jim and Huck are basing their opinion of kings and any royalty on fake kings.
Thus, the correct answer is the fourth option.