Read the following excerpt from Mark Twain’s The Adventures of Huckleberry Finn and answer the question.

Two or three days and nights went by; I reckon I might say they swum by, they slid along so quiet and smooth and lovely. Here is the way we put in the time. It was a monstrous big river down there--sometimes a mile and a half wide; we run nights, and laid up and hid day-times. (…) Then we set out the lines. Next we slid into the river and had a swim, so as to freshen up and cool off; then we set down on the sandy bottom where the water was about knee deep, and watched the daylight come. Not a sound anywheres--perfectly still--just like the whole world was asleep, only sometimes the bull-frogs a-cluttering, maybe.

Which of the following best describes the style of this excerpt?

informal
emotive
detached
ornate