TOEFL Reading: ETS-TOEFL阅读机经 - 3Q6JVF55CVP9Q10BL$

What can be inferred from paragraph 5 about the song of white-crowns raised in the wild A. It is less complex than the song of birds raised in isolation. B. It is the standard song of the white-crown species. C. It is a mixture of the basic white-crown song and the dialects of other white-crowns that inhabit the local area. D. It is identical to dialects learned from exposure to tapes.