Final answer:
Stephen Crane used irony and symbolism to emphasize the brutality of war, while Ambrose Bierce used humor and satire. Therefore, the correct option is C.
Step-by-step explanation:
Stephen Crane and Ambrose Bierce used different literary elements in their Civil War fiction to create different effects. Stephen Crane used irony and symbolism to emphasize the brutality of war, while Ambrose Bierce used humor and satire. Crane's use of literary elements created a sense of hope, while Bierce's use conveyed despair. Therefore, the answer is (c) Stephen Crane used irony and symbolism to emphasize the brutality of war, while Ambrose Bierce used humor and satire.