Answer: it emphasizes the displacement of the speaker's family.
Throughout the poem, the author maintains an extended metaphor about swimming. As she tells us the story of how her family escaped the island, she talks to us about swimming, drowning, the beach, the pool, etc. This is intended to emphasize the displacement of the family. Alvarez feels lost and adrift, much like we would feel if we were lost at sea.
The answer is Horatio in William Shakespeare’s “Hamlet” He
said that he was more of a Roman than a Dane. This implies that he is very
loyal to Hamlet that he is willing to drink the poison in the cup which was the
same poison that killed Hamlet.