In the passage, the narrator predominantly communicates his experiences on the Mississippi through which of the following literary devices?

Hyperbole involves exaggerated statements or claims not meant to be taken literally, often used for emphasis or effect. While the narrator may use hyperbole occasionally, it does not predominantly characterize his communication about the Mississippi. Instead, the use of hyperbole would detract from the nuanced and rich imagery that metaphors provide.

Synecdoche is a figure of speech in which a part represents the whole or vice versa. While this device may appear in the text, it does not primarily drive the narrator's communication regarding his experiences on the Mississippi. Synecdoche tends to offer a more limited perspective compared to the broader implications that metaphors carry.

Anaphora involves the repetition of a word or phrase at the beginning of successive clauses or sentences for emphasis. Although the narrator might use anaphora to create rhythm or highlight certain aspects, it does not fundamentally shape his depiction of the Mississippi as effectively as metaphor does.