Final answer:
The CFL's 'big prize' is known as the Grey Cup, which is the name of the championship trophy awarded to the league's winning team each year.The correct option is c.
Step-by-step explanation:
The "big prize" for the Canadian Football League ("CFL") is called the Grey Cup. It's the championship trophy awarded annually to the winning team of the CFL's championship game and is one of Canada's largest annual sports and television events. The Grey Cup has a rich history dating back over a century and is named after Earl Grey, the Governor General of Canada who donated the trophy in 1909.