Based on the following book synopsis, which two purposes could the author have for writing the book? An explorer writes a nonfiction book about an ancient city that he has discovered, including many details and anecdotes.

1.to inform

2.to argue

3.to persuade

4.to entertain

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.