chirping loudly in imitation of their parents hatched from an egg laid by the parents speckled brown coloring that looks like leaves small beaks for eating seeds
I gave my students this multiple choice question: Which feature of some young birds helps them avoid becoming prey before they learn to fly?

Only one answer is correct among these 4 choices:
- chirping loudly in imitation of their parents
- hatched from an egg laid by the parents
- speckled brown coloring that looks like leaves
- small beaks for eating seeds

Could you tell me which one is correct?

speckled brown coloring that looks like leaves