The correct answer is D. <span>shows a relationship between words.
Analogies in general show relationship between the entities used in the analogies. In this case, it relates to words.</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.
D. Sarcastic
The authors best describes the passage in a sarcastic tone.