If you were writing a letter about how swimming is the best exercise, which sentence would be a good supporting reason for your argument? A) Soccer is excellent at developing both lower body strength and endurance for long runs. B) If your town only has access to an outside pool, then your swimming time is limited by cold weather. C) The skills you learn while swimming don't always translate easily to real-life everyday skills you need. Eliminate D) Swimming not only helps develop your entire body's muscles, it also helps you use oxygen and breathe better.