Answer:
D)nuts and tough fruits
Step-by-step explanation:
Bird beaks are developed to perform their functions, they are true tools that help birds survive in their habitat.
This type of beak is seen from birds called granivores. This short beak is strong and skilled, the granivore beak has the strength to break down hard seeds, nuts and hard fruits. In addition, this type of beak has the delicacy to separate the discarded bark from the nutritious part that feeds the bird.