In the early 1970s the city had many problems. The number of visitors was falling. So the government of the New York City decided to call the city“the Big Apple", inviting visitors to “take a bite out of the apple".
上世纪70年代初,这座城市遇到了许多问题。游客的数量在下降。所以纽约市政府决定将这座城市称为“大苹果”,邀请游客来“咬一口苹果”。
可知,政府称纽约为“大苹果”是为了邀请更多游客参观纽约。故选D