<span>the boy refuses the sailor's offer of food.</span>
The irony is that they are smiling with “torn and bleeding hearts”.
The idea it emphasizes is that they are smiling to hide their pain.
The overall message revealed by the irony is that they are in considerable emotional turmoil and faking happiness to mask their distress.
Answer:
Exposition/introduction. Rising action. Climax/turning point
Explanation: