It would better improve the paragraph because it has nothin to do with the rest of the paragraph. The paragraph seems to be about team sports and promoting it, while sentence 3 is about individual sports are better then team sports. So removing sentence three would better promote CO-ED team sports.
A reader might feel like they can relate to the situation that the writer is going through. They understand and therefor can relate emotionally to the situation.
The answer wouldend up being true.
