It provided more jobs for people and the middle class became wealthy
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.
C.
The introductory phrase, "Crowned with a wreath of olive leaves", is correctly separated by a comma.
