Which Statement Does Not Characterize Individual Variation in the Singing

Multiple Choice

Which statement does not characterize individual variation in the singing behavior of a bird species?

A) Variation may help a bird arriving in a region adopt the local dialect.
B) Birds on neighboring territories can vary in their songs.
C) White-crowned sparrows in nature always sing their species-specific song.
D) Individual variation may be key to attracting mates.
E) Individual variation may be key to maintaining a bond between mates.