Answer:
Irony.
Explanation:
An irony is a literary device used by the writer to show a contrast between the expectations and the reality. The words, in this device, is used as such to reveal the difference between the actual and intended meaning of the word.
In the given statement the literary device of irony is used. It is taken from the play named "The Outside" written by Susan Glaspell; a one-act play. The writer, through this play, tried to convey the emptiness of Mrs. Patrick who resides in the lifesaving station with her servant.
The line stated in the question is ironic because though the name where Mrs. Patrick resides is called 'lifesaving station', she has lost the hope of living and chose a life of isolation.
So, the correct answer is irony.