A dog scratches at a door to go outside. A dog has floppy ears. A dog pants to cool itself on a hot day. A dog has a dark coat.
I gave my students this multiple choice question: Which statement best describes a learned characteristic in a dog?

Only one answer is correct among these 4 choices:
- A dog scratches at a door to go outside.
- A dog has floppy ears.
- A dog pants to cool itself on a hot day.
- A dog has a dark coat.

Could you tell me which one is correct?

A dog scratches at a door to go outside.