An strong argument For using the atomic bomb is that it will show the power and the technology that the USA has. An strong argument Against is that it will cause a massacre as well as an devastating environmental impact. Remember that arguments have to be valid and convincing. They should also be well supported with explanations and examples.
I don't think anyone can answer your question unless they have a bit of backstory. Judging them based solely on their names isn't at least in my opinion going to help your grades out.<span />