Answer:
The correct answer is A person drowning.
Step-by-step explanation:
This stanza is taken from Byron's Childe Harold's Pilgrimage. The stanza 179 is referenced by Austen in chapter 12 of Persuasion. As an example taken from this stanza we could read the following: "A shadow of man's ravage, save his own,
When, for a moment, like a drop of rain,
He sinks into thy depths with bubbling groan,".
It is noticeable that the part that says: "He sinks into thy depths with bubbling groan," makes a clear reference of someone that is drowning.