【单选题】

On the fourth Thursday of November, every year,Americans celebrate ThanksgivingDay. The day is a national holiday which is set aside each year as a time to give thanks to God for our blessings (祝福).

Legend has it that the firstEnglish colonists (殖民者) in Massachusetts (马萨诸塞州) started the custom.According to the story, the Pilgrims~ first winter in the New World was difficult. They had arrived too late to grow many crops, and without fresh food, half of the colonists died from disease. The following spring the Indians taught them how to grow corn. In the autumn of 1621, bountiful crops of corn, beans and pumpkins were harvesteD、 The colonists had much to be thankful for, so a feast was planneD、 They invited their Indian friends to join them in a large feast to share in the bounties (慷慨) of the lanD、 This is the first Thanksgiving.
The traditional foods of the big ThanksgivingDay meal include roast turkey, cranberries, sweet potatoes, pumpkin pie, and Indian bread puddings.
Since the day is set aside for giving thanks, it has also become a traditional family day. Large dinners with many relatives are common throughoutAmerica on this special day.
Football games played on ThanksgivingDay often attract large TV audiences because______.
A、football is an old-time tradition
B．the Indians taught the Pilgrims to play football
C．large families often play football
D．most football fans are home from work