laying eggs to reproduce having hollow, light-weight bones avoiding insects that taste bad having white feathers on the throat
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of the following involves a learned behavior?
Possibilities:
- laying eggs to reproduce
- having hollow, light-weight bones
- avoiding insects that taste bad
- having white feathers on the throat

avoiding insects that taste bad