Use the Following Information to Answer the Next Few Questions

Use the following information to answer the next few questions.
Two populations of the highly ornamented white-crested sparrow species are spatially separated by a mountain range. Males from the two populations exhibit differing elaborate courtship displays. When a female appears, the males from the eastern population approach the female while bobbing their heads and spreading their wings, while the western population approaches a female by hopping and flapping their wings. Individuals from each population reared in isolation exhibited the same courtship displays as those in the wild.
-After mating a female from the eastern population to a male from the western population, the resulting male offspring exhibited a hybrid courtship display, bobbing their heads and flapping their wings. This indicates that

A) courtship displays are a result of environmental pressures.
B) the elicited courtship display depends on female response.
C) courtship displays are under the control of more than one gene.
D) courtship displays are a learned behaviour.
E) associative learning is involved in courtship displays.