Answer:
D. Beneath the surface of the putrid swamp came a gurgling that suggested the ghosts of those who died here were drowning still.
Step-by-step explanation:
Imagery is a literary device that uses a vivid and descriptive language that evokes pictures or ideas in our minds that appeals to our senses, be it our sight, hearing, smell, taste or touch.
The two options that best fits this definition is B and D: They are both descriptive and B appeals to our sight, while D appeals to our senses of smell and sight. However, the option that has a somber, dark and negative mode here is D because it describes an awful and smelly atmosphere (the putrid swamp) and it talks about death, ghosts, and suffering (the ghosts of those who died here were drowning still).