Which event in the adventures of huckleberry Finn shows an example of an act of cowardice

The correct answer is:

Colonel Sherburn shoots and kills a drunk man who is unarmed and defenseless.

"The Adventures of Huckleberry Finn" by Mark Twain' is a novel first published in the United Kingdom in December 1884 and in the United States in February 1885. In the novel Colonel Sherburn is a storekeeper who firearms down a nearby alcoholic whose name is Boggs. Boggs has ridden into town undermining to sacrifice the Colonel and abuse and insults him until Sherburn shows up in the city. After Sherburn executes Boggs, some of the town's men choose to face Colonel Sherburn, prompting one of the novel's fundamental occasions, an occasion that impacts further improvements.