Final answer:
Cassio's comments in Act III, Scene 1 of "Othello" are ironic because they reveal a contrast between what he wants and what is actually happening. This irony adds dramatic tension and miscommunication to the play, fueling Iago's manipulation of Othello. Cassio's request for a private conversation with Desdemona contributes to the unfolding tragedy.
Step-by-step explanation:
Cassio's comments in Act III, Scene 1 of Shakespeare's "Othello" are ironic because they reveal a contrast between what Cassio wants and what is actually happening. He asks Emilia to help him speak to Desdemona alone, implying that he needs to discuss his situation secretly with her. However, the irony lies in the fact that Desdemona is already advocating for Cassio with Othello, making the need for secrecy and additional support unnecessary.
This irony adds dramatic tension and miscommunication to the play, fueling Iago's manipulation of Othello and complicating the plot. Cassio's request for a private conversation with Desdemona ultimately contributes to the unfolding tragedy by setting the stage for Iago's schemes.