Use the following excerpt from "The Happy Man" to answer the questions.
The truth is, Doctor, that I've come to see you because I'm happy!' He looked at the doctor to see what effect his statement had had on him but noticed that he was keeping his composure. He felt ridiculous. 'I'm inconceivably happy...' he said in a tone of confidence. He began to tell the doctor his story, but the latter stopped him with a gesture of his hand. 'An overwhelming, indelible, debilitating happiness?' he asked quietly. He stared at him in amazement and was on the point of saying something, but the doctor spoke first. 'A happiness which has made you stop working,' he asked, 'abandon your friends, and detest going to sleep?...''You're a miracle!' he shouted. 'Every time you get involved in some misfortune,' the psychiatrist continued quietly, 'you dissolve into laughter?...''Sir...are you familiar with the invisible?' 'No!' he said with a smile. 'Nothing like that. But I get a similar case in my clinic at least once a week!
Which of the following stylistic elements is used by the writer in these lines to create humor?
repetition
incongruity
irony
ridicule