Answer:
<u>Option a. The following quotation from "A Horseman in the Sky" shows how Carter Druze's father advances the plot of the story:</u>
<u>"Well, go, sir, and, whatever may occur, do what you conceive to be your duty."</u>
Explanation:
When Carter's Druze's father tells him that he should go and do his duty, no matter what, Carter is then determined to face the horseman in battle. It could be analyzed that his father's words make the plot of the story to advance to the next level as they make Carter to take an action. In the end, the reader finds out that the horseman Carter needed to fight was no other than his own father, with the tragic irony of father and son being in opposite sides of a war.
"A Horseman in the Sky" is a short-story written by American author Ambrose Bierce that was first published on April 14th, 1889. It tells the story of Carter Druze, a young soldier that is fighting during the American Civil War, when he finds himself wandering weather or not he should shoot a Confederacy Horseman he sees not far away.