What is one way in which mark twain urges social change in his fictional writing?

a. by showing how evil certain institutions are

b. by laying out arguments for what he believes in

c. by evoking dark emotions in his readers

d. by making fun of certain ideas and beliefs

The correct answer is option D. "By making fun of certain ideas and beliefs". Mark Twain is an author that criticizes society in his fictional books by making fun of certain ideas and beliefs. One example is his novel "Adventures of Huckleberry Finn", at which Mark Twain makes fun of how easily the people can be tricked by showing how Huck fakes his death, and how people can make decisions based on dreamy ideas such as Tom Sawyer.