Male bowerbirds construct elaborately decorated nests, or bowers. Basing their judgment on the fact that different local populations of bowerbirds of the same species build bowers that exhibit different building and decorative styles, researchers have concluded that the bowerbirds' building styles are a culturally acquired, rather than a genetically transmitted, trait.
Which of the following, if true, would most strengthen the conclusion drawn by the researchers?
(A)There are more common characteristics than there are differences among the bower-building styles of the local bowerbird population that has been studied most extensively.
(B)Young male bowerbirds are inept at bower- building and apparently spend years watching their elders before becoming accomplished in the local bower style.
(C)The bowers of one species of bowerbird lack the towers and ornamentation characteristic of the bowers of most other species of bowerbird.
(D)Bowerbirds are found only in New Guinea and Australia, where local populations of the birds apparently seldom have contact with one another.
(E)It is well known that the song dialects of some songbirds are learned rather than transmitted genetically.
题目分析：这道题目问的很具体，支持文章的结论，结论说的就是building style是文化传承来的，我们来看选项，A说共同点多余差异，没什么关系。B说这些鸟在建巢的时候会看长辈怎么干的，跟文化传承有点关系，留着。C说一种鸟没有别的鸟的特点，和文化传承没什么关系杀。D说这些鸟互相不联系，扯得就更远了，杀。E说一些鸟的语言是学习的不是基因影响的，文章围绕的是建巢受什么影响，而不是语言，主体错了，杀。
