B. It helps to narrow the topic.
Mohamed Abdullahi Mohamed
They are not effective because they don't have evidence , support of claims. I hope that this is the answer that you were looking for and it has helped you. Have a nice day.
Answer:
verbal irony
Explanation:
Verbal irony is a figure of speech. The speaker intends to be understood as meaning something that contrasts with the literal or usual meaning of what he says.