D. They had larger beaks.
Due to the drought they would need to dig deeper for food. But their tiny beaks could not do that. So over time their beaks grew and adapted to the drought. Therefor the answer is D. They had larger beaks!
Hope this helped! <3
The answer to this question is B
They provide information about the pasts of the animal and plants.
Xylem tissue makes up a root organ
