单选题 According to Donald Kroodsma, ______ as "rapid cultural evolution within each generation".

A、 whales are as constantly changing their song as birds, creating what is known
B、 whales are seldom changing their song in the way we find in birds
C、 birds are less often changing their songs than whales are
D、 birds would never change their songs as whales would do

【正确答案】 C

【答案解析】文中第二段说This kind of song evolution is found in whales but，up until now，rarely in birds，即在鲸类比较常见，而不常发生鸟类身上，选项C正确。