Final answer:
The story 'The Cask of Amontillado' by Edgar Allan Poe exemplifies dramatic irony, with the use of an unreliable narrator and vivid imagery enhancing the mood and themes of betrayal and retribution.
Step-by-step explanation:
The type of irony present in Edgar Allan Poe's story 'The Cask of Amontillado' is primarily dramatic irony. This is because the audience is aware of the protagonist's intentions of revenge against Fortunato, while Fortunato himself is oblivious to the danger he is in. The narrative mode used in 'The Cask of Amontillado' is first person, where the unreliable narrator, Montresor, tells the story of how he sought revenge against Fortunato. The use of an unreliable narrator adds depth to the story and can impact the perception of the events that unfold.
Words with strong connotations that contribute to the mood of the story include 'revenge,' 'insult,' and 'impunity.' The word 'revenge' connotes a deep-seated desire for retaliation, 'insult' suggests an offense significant enough to warrant such a reaction, and 'impunity' implies a sinister level of confidence in escaping punishment.
Through vivid imagery, such as the descriptions of the catacombs and the increasing sense of entrapment, Poe intensifies the mood of dread and foreboding. The imagery also helps to reinforce the diabolical nature of Montresor's character and underlines the themes of betrayal and retribution.