Answer: D) imagery.
Explanation: Imagery is a literary device that consists in the use of figurative language or detailed descriptions in order to evoke the senses of the reader (sight, smell, taste, hearing, or touch) and to create a mental picture. In the given excerpt from Canto IX we can see an example of the use of imagery, it is evident in phrases like "muddy waves," "blasting sound," "fear-inspiring roar," etc.
