Due to Reproductive Isolation,a New Species of Weaver Bird Is

Due to reproductive isolation,a new species of weaver bird is evolving.Is it likely to use a social or solitary nesting strategy?

A) It depends on whether it lives in the forest or the open savanna.
B) It depends on whether it lives in near water or near the desert.
C) It depends on how many similar species it is competing with.
D) It depends on how many eggs it lays.