Answer:
D) It paints a picture for the reader of how dangerous it is to be lost at sea.
Step-by-step explanation:
According to the excerpt, the narrator uses imagery by asking readers if they've been at sea in a dense fog before and feel trapped in a ship anxious to find their way out of it with a beating heart, waiting for something to happen but not knowing what that would be.
The narrator proceeds to say that he's been in that situation before but he was without a compass or sounding-line.
The statement that best describes the purpose of the imagery in the excerpt is [hat it paints the picture of how dangerous it is to be lost at sea.