A dash is most often used to do which of the following? Select one:

indicate a sudden change in thought

set up a series of items in a list

mark the beginning of a quotation

begin a dramatic monologue

What is implied in this sentence from mark twain's "the ? 1,000,000 bank-note"? i was puzzled, and wanted to discuss the matter a little further, but they didn't; so i took my leave, feeling hurt and insulted to be made the butt of what was apparently some kind of a practical joke, and yet obliged to put up with it, not being in circumstances to resent affronts from rich and strong folk.