The answer is: B.) In "Cub Pilot." Twain compares his emotional outburst with Mr. Bixby's calm demeanor
In Life on the Mississippi by Mark Twain, Twain relates stories about the cub pilot with Mr. Bixby surrounded by humorous notes, while he, Twain, is a young man unexperienced, Mr. Bixby who is training him, is older with a calmer temperament, which makes a humorous comparation.
