I incline to Cain’s heresy,’ he used to say quaintly: ‘I let my brother go to the devil in his own way.’ Is an example of which literary device?

Why does pumblechook choke on the brandy at christmas dinner? a. he has had too much to drink. b. mrs. joe had only spoiled brandy to serve him. c. pip replaced it with tar water. d. he becomes overexcited telling his story.