The adventure of Robinson Crusoe on a desert island is not only as popular as it once was, but it is also difficult to produce a similar theme in modern popular novels. The public's interest in reading has changed. Because it is difficult to convince people that there are still undiscovered, uninhabited desert islands. This passage shows the author's point of view? ['Readers prefer and accept credible contemporaries.', 'No single form of the novel will interest all readers.', 'Readers no longer want to change the lives they have now got rid of restrictions and regulations.', 'The best popular books should give readers a sense of immersion.']