eating with a fork shivering when it is cold squinting your eyes in bright light developing a fever when you are sick
I gave my students this multiple choice question: Which behavior is a learned behavior?

Only one answer is correct among these 4 choices:
- eating with a fork
- shivering when it is cold
- squinting your eyes in bright light
- developing a fever when you are sick

Could you tell me which one is correct?

eating with a fork