Read this excerpt from Mark Twain's Life on the Mississippi:

She is long and sharp and trim and pretty; she has two tall, fancy-topped chimneys, with a gilded device of some kind swung between them; a fanciful pilot-house, all glass and "gingerbread," perched on top of the "texas" deck behind them.
Which of these devices is most clearly shown here?

A.
Imagery

B.
Metaphor

C.
Hyperbole

D.
Humor