Answer:
D. Verbal irony
Explanation:
Verbal irony is an intentional discrepancy between what is said and what is meant. This literary device is often known as being sarcastic, and is most commonly used to make emphasis or in a humorous context. This is what the radio commentator uses when he says “That was sure a big downpour,” because in reality, there was not a big downpour: "only a few clouds passed over."
