The correct answer is A. conciseness.
Brevity pays in debate because it allows you to make your points more effectively. When you are concise, you are able to focus on the most important points and avoid getting bogged down in irrelevant details. This makes it easier for your audience to understand your argument and to be persuaded by your points.
Sharpness is not necessarily a good thing in debate. A sharp argument can be too aggressive and can put off your audience. Quickness is also not always a good thing. If you are too quick to respond, you may not have time to think through your argument carefully. Confidence is important in debate, but it is not the only thing that matters. You also need to be able to support your arguments with evidence and to be able to answer your opponent’s questions.
In conclusion, the correct answer is
A. conciseness. Brevity pays in debate because it allows you to make your points more effectively.